diff --git a/dataproc_jupyter_plugin/controllers/bigquery.py b/dataproc_jupyter_plugin/controllers/bigquery.py
index d0fdcb60..c56d6347 100644
--- a/dataproc_jupyter_plugin/controllers/bigquery.py
+++ b/dataproc_jupyter_plugin/controllers/bigquery.py
@@ -152,14 +152,34 @@ class SearchController(APIHandler):
     async def post(self):
         try:
             search_string = self.get_argument("search_string")
-            type = self.get_argument("type")
+            search_type = self.get_argument("type")
             system = self.get_argument("system")
-            projects = await bq_projects_list()
+            scope_str = self.get_argument("scope", default="false")
+            scope = scope_str.lower() == "true"
+            projects_arg = self.get_argument("projects", default=None)
+            locations = self.get_arguments("location")
+
+            page_size = int(self.get_argument("page_size", default="100"))
+            page_token = self.get_argument("page_token", default=None)
+
+            if projects_arg:
+                projects = projects_arg.split("|")
+            else:
+                projects = await bq_projects_list()
+
             bq_client = await bigquery_client.get_client(self.log)
-            search_data = await bq_client.bigquery_search(
-                search_string, type, system, projects
+            search_data = await bq_client.bigquery_semantic_search(
+                search_string,
+                search_type,
+                system,
+                projects,
+                scope,
+                locations,
+                page_size=page_size,
+                page_token=page_token,
             )
             self.finish(json.dumps(search_data))
         except Exception as e:
             self.log.exception("Error fetching search data")
             self.finish({"error": str(e)})
+
diff --git a/dataproc_jupyter_plugin/services/bigquery.py b/dataproc_jupyter_plugin/services/bigquery.py
index 1a4be9e5..c2e378cc 100644
--- a/dataproc_jupyter_plugin/services/bigquery.py
+++ b/dataproc_jupyter_plugin/services/bigquery.py
@@ -245,3 +245,92 @@ async def bigquery_projects(self, dataset_id, table_id):
         except Exception as e:
             self.log.exception("Error fetching projects")
             return {"error": str(e)}
+
+    async def bigquery_semantic_search(
+        self,
+        search_string: str,
+        search_type: str,
+        system: str,
+        projects: list,
+        scope: bool,
+        locations: list,
+        page_size: int = 100,
+        page_token: str = None,
+    ):
+        """Searches for BigQuery data assets using the Dataplex API with Semantic Search enabled."""
+        try:
+            dataplex_url = await urls.gcp_service_url(DATAPLEX_SERVICE_NAME)
+            api_endpoint = f"{dataplex_url}v1/projects/{self.project_id}/locations/global:searchEntries"
+
+            headers = {
+                "Content-Type": "application/json",
+                "Authorization": f"Bearer {self._access_token}",
+                "X-Goog-User-Project": self.project_id,
+            }
+
+            query_parts = []
+            if search_string:
+                query_parts.append(f"{search_string}")
+
+            if system:
+                query_parts.append(f"system={system.upper()}")
+
+            if search_type:
+                types = search_type.split("|")
+                type_filters = " OR ".join([f"type={t.upper()}" for t in types])
+                query_parts.append(f"({type_filters})")
+
+            if projects:
+                project_filters = " OR ".join([f"projectid={p}" for p in projects])
+                query_parts.append(f"({project_filters})")
+
+            if locations:
+                location_filters = " OR ".join([f"location={l}" for l in locations])
+                query_parts.append(f"({location_filters})")
+
+            full_query = " AND ".join(filter(None, query_parts))
+
+            if not full_query:
+                self.log.warning("No search query provided. Returning empty result.")
+                return {}
+
+            payload = {
+                "name": f"projects/{self.project_id}/locations/global",
+                "query": full_query,
+                "pageSize": page_size,
+                "semanticSearch": True,
+            }
+
+            if page_token:
+                payload["pageToken"] = page_token
+            if scope:
+                payload["scope"] = f"projects/{self.project_id}"
+
+            try:
+                async with self.client_session.post(
+                    api_endpoint, headers=headers, json=payload
+                ) as response:
+                    if response.status == 200:
+                        resp = await response.json()
+                        # Return only this page and the token for the next one
+                        return {
+                            "results": resp.get("results", []),
+                            "nextPageToken": resp.get("nextPageToken", None),
+                            "totalSize": resp.get("totalSize", 0),
+                        }
+                    else:
+                        response_text = await response.text()
+                        self.log.error(
+                            f"Error searching in Dataplex: {response.status} - {response_text}"
+                        )
+                        raise Exception(
+                            f"Dataplex API Error: {response.status} - {response.reason} - {response_text}"
+                        )
+
+            except aiohttp.ClientError as e:
+                self.log.error(f"Aiohttp client error during API call: {e}")
+                raise
+
+        except Exception as e:
+            self.log.exception(f"Error fetching Dataplex search data: {e}")
+            return {"error": str(e)}
\ No newline at end of file
diff --git a/dataproc_jupyter_plugin/tests/test_semanticSearch.py b/dataproc_jupyter_plugin/tests/test_semanticSearch.py
new file mode 100644
index 00000000..3aae2dbc
--- /dev/null
+++ b/dataproc_jupyter_plugin/tests/test_semanticSearch.py
@@ -0,0 +1,178 @@
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+import pytest
+import aiohttp
+import asyncio
+import time
+from unittest.mock import AsyncMock, patch, Mock
+
+from dataproc_jupyter_plugin.services.bigquery import Client
+from dataproc_jupyter_plugin.commons.constants import (
+    DATAPLEX_SERVICE_NAME
+)
+
+@pytest.fixture
+def mock_credentials():
+    return {
+        "access_token": "mock-token",
+        "project_id": "test-project",
+        "region_id": "us-central1"
+    }
+
+@pytest.fixture
+def mock_log():
+    return Mock()
+
+@pytest.fixture
+def mock_client_session():
+    return AsyncMock(spec=aiohttp.ClientSession)
+
+@pytest.fixture
+def mock_dataplex_url():
+    with patch("dataproc_jupyter_plugin.urls.gcp_service_url") as mock_url:
+        mock_url.return_value = "https://dataplex.googleapis.com/"
+        yield mock_url
+
+@pytest.mark.asyncio
+async def test_semantic_search_payload_construction(
+    mock_credentials, mock_log, mock_client_session, mock_dataplex_url
+):
+    """Verifies that the Dataplex query and JSON payload are correctly formed."""
+    mock_response = AsyncMock()
+    mock_response.status = 200
+    mock_response.json.return_value = {
+        "results": [{"dataplexEntry": {"displayName": "sales_table"}}],
+        "totalSize": 1
+    }
+    mock_client_session.post.return_value.__aenter__.return_value = mock_response
+
+    client = Client(mock_credentials, mock_log, mock_client_session)
+    
+    await client.bigquery_semantic_search(
+        search_string="revenue",
+        search_type="TABLE|VIEW",
+        system="BIGQUERY",
+        projects=["proj-1"],
+        scope=True,
+        locations=["us"],
+        page_size=20,
+        page_token="token-abc"
+    )
+
+    # Validate the generated URL
+    expected_url = "https://dataplex.googleapis.com/v1/projects/test-project/locations/global:searchEntries"
+    
+    # Validate the complex query string construction
+    expected_query = "revenue AND system=BIGQUERY AND (type=TABLE OR type=VIEW) AND (projectid=proj-1) AND (location=us)"
+    
+    # Validate the JSON payload including the semanticSearch toggle
+    expected_payload = {
+        "name": "projects/test-project/locations/global",
+        "query": expected_query,
+        "pageSize": 20,
+        "semanticSearch": True,
+        "pageToken": "token-abc",
+        "scope": "projects/test-project"
+    }
+
+    call_args = mock_client_session.post.call_args
+    assert call_args[0][0] == expected_url
+    assert call_args[1]["json"] == expected_payload
+    assert call_args[1]["headers"]["X-Goog-User-Project"] == "test-project"
+
+@pytest.mark.asyncio
+async def test_semantic_search_empty_input_handling(
+    mock_credentials, mock_log, mock_client_session
+):
+    """Ensures the client returns early with a warning if no search parameters exist."""
+    client = Client(mock_credentials, mock_log, mock_client_session)
+    
+    result = await client.bigquery_semantic_search(
+        "", "", "", [], False, []
+    )
+    
+    assert result == {}
+    mock_log.warning.assert_called_once_with("No search query provided. Returning empty result.")
+
+@pytest.mark.asyncio
+async def test_semantic_search_api_failure(
+    mock_credentials, mock_log, mock_client_session, mock_dataplex_url
+):
+    """Verifies error handling when the Dataplex API returns a non-200 status."""
+    mock_response = AsyncMock()
+    mock_response.status = 403
+    mock_response.reason = "Forbidden"
+    mock_response.text.return_value = "Access Denied"
+    mock_client_session.post.return_value.__aenter__.return_value = mock_response
+
+    client = Client(mock_credentials, mock_log, mock_client_session)
+    
+    result = await client.bigquery_semantic_search("test", "TABLE", "BQ", [], False, [])
+
+    assert "error" in result
+    assert "Dataplex API Error: 403" in result["error"]
+    mock_log.exception.assert_called_once()
+
+@pytest.mark.asyncio
+async def test_tornado_responsiveness_during_semantic_search(
+    mock_credentials, mock_log, mock_client_session, mock_dataplex_url
+):
+    """
+    Verifies that the Tornado event loop remains responsive (non-blocking)
+    while the semantic search API call is in flight.
+    """
+    # Create a mock response object first
+    mock_json_body = AsyncMock()
+    mock_json_body.return_value = {}
+    
+    mock_response = AsyncMock()
+    mock_response.status = 200
+    mock_response.json = mock_json_body
+    # This is the key: Mock the context manager __aenter__ to return our response
+    mock_response.__aenter__ = AsyncMock(return_value=mock_response)
+
+    async def slow_response(*args, **kwargs):
+        await asyncio.sleep(0.5)
+        return mock_response
+
+    # Use side_effect to trigger the delay
+    mock_client_session.post.side_effect = slow_response
+    client = Client(mock_credentials, mock_log, mock_client_session)
+
+    start_canary = time.perf_counter()
+
+    # Start the search task
+    search_task = asyncio.create_task(
+        client.bigquery_semantic_search(
+            search_string="revenue", 
+            search_type="TABLE", 
+            system="BQ", 
+            projects=["*"], 
+            scope=False, 
+            locations=[]
+        )
+    )
+
+    # Canary sleep to check for blocking
+    await asyncio.sleep(0.05) 
+    
+    end_canary = time.perf_counter()
+    latency = end_canary - start_canary
+
+    # Await the actual task to clean up the coroutine
+    await search_task
+
+    assert latency < 0.1, f"Tornado loop was blocked! Latency was {latency:.4f}s"
\ No newline at end of file