diff --git a/api/tests/routers/test_search.py b/api/tests/routers/test_search.py
index 7bc4a9d..c70fadb 100644
--- a/api/tests/routers/test_search.py
+++ b/api/tests/routers/test_search.py
@@ -91,6 +91,63 @@ def test_search_pagination(client: TestClient, mock_storage: MagicMock) -> None:
     assert data["meta"]["prev"] is not None  # Should have prev page
 
 
+def test_search_empty_parameters(client: TestClient, mock_storage: MagicMock) -> None:
+    # Mock data
+    timestamp = TwitterTimestamp.from_int(int(datetime(2023, 1, 1, tzinfo=timezone.utc).timestamp() * 1000))
+
+    note = Note(
+        note_id="1234567890123456789",
+        post_id="2234567890123456789",
+        language="ja",
+        topics=[Topic(topic_id=1, label={"ja": "テスト", "en": "test"}, reference_count=1)],
+        summary="Test summary",
+        current_status="NEEDS_MORE_RATINGS",
+        created_at=timestamp,
+    )
+
+    post = Post(
+        post_id="2234567890123456789",
+        x_user_id="9876543210123456789",
+        x_user=XUser(
+            user_id="9876543210123456789",
+            name="test_user",
+            profile_image="http://example.com/image.jpg",
+            followers_count=100,
+            following_count=50,
+        ),
+        text="Test post",
+        media_details=[],
+        created_at=timestamp,
+        like_count=10,
+        repost_count=5,
+        impression_count=100,
+        links=[],
+        link="http://x.com/test_user/status/2234567890123456789",
+    )
+
+    # Mock storage response for empty parameters
+    mock_storage.search_notes_with_posts.return_value = [(note, post)]
+    mock_storage.count_search_results.return_value = 1
+
+    # Test search with no parameters
+    response = client.get("/api/v1/data/search")
+    assert response.status_code == 200
+
+    data = response.json()
+    assert "data" in data
+    assert "meta" in data
+    assert len(data["data"]) == 1
+
+    # Verify response structure
+    result = data["data"][0]
+    assert result["noteId"] == "1234567890123456789"
+    assert result["postId"] == "2234567890123456789"
+    assert result["language"] == "ja"
+    assert result["summary"] == "Test summary"
+    assert result["currentStatus"] == "NEEDS_MORE_RATINGS"
+    assert result["post"]["postId"] == "2234567890123456789"
+
+
 def test_search_parameters(client: TestClient, mock_storage: MagicMock) -> None:
     mock_storage.search_notes_with_posts.return_value = []
     mock_storage.count_search_results.return_value = 0
diff --git a/common/birdxplorer_common/storage.py b/common/birdxplorer_common/storage.py
index 7836005..9951e7a 100644
--- a/common/birdxplorer_common/storage.py
+++ b/common/birdxplorer_common/storage.py
@@ -623,8 +623,8 @@ def count_search_results(
         with Session(self.engine) as sess:
             query = (
                 sess.query(NoteRecord)
-                .join(PostRecord, NoteRecord.post_id == PostRecord.post_id)
-                .join(XUserRecord, PostRecord.user_id == XUserRecord.user_id)
+                .outerjoin(PostRecord, NoteRecord.post_id == PostRecord.post_id)
+                .outerjoin(XUserRecord, PostRecord.user_id == XUserRecord.user_id)
             )
 
             # Apply note filters