diff --git a/Flow.Launcher/ViewModel/MainViewModel.cs b/Flow.Launcher/ViewModel/MainViewModel.cs
index 30df8250c..566cb6814 100644
--- a/Flow.Launcher/ViewModel/MainViewModel.cs
+++ b/Flow.Launcher/ViewModel/MainViewModel.cs
@@ -1244,10 +1244,14 @@ namespace Flow.Launcher.ViewModel
         {
             _updateSource?.Cancel();
 
+            App.API.LogDebug(ClassName, $"Start query with text: <{QueryText}>");
+
             var query = await ConstructQueryAsync(QueryText, Settings.CustomShortcuts, Settings.BuiltinShortcuts);
 
             if (query == null) // shortcut expanded
             {
+                App.API.LogDebug(ClassName, $"Clear query results");
+
                 // Hide and clear results again because running query may show and add some results
                 Results.Visibility = Visibility.Collapsed;
                 Results.Clear();
@@ -1262,6 +1266,8 @@ namespace Flow.Launcher.ViewModel
                 return;
             }
 
+            App.API.LogDebug(ClassName, $"Start query with ActionKeyword <{query.ActionKeyword}> and RawQuery <{query.RawQuery}>");
+
             var homeQuery = query.RawQuery == string.Empty;
 
             _updateSource = new CancellationTokenSource();
@@ -1313,6 +1319,9 @@ namespace Flow.Launcher.ViewModel
                 }
             }
 
+            var validPluginNames = plugins.Select(x => $"<{x.Metadata.Name}>");
+            App.API.LogDebug(ClassName, $"Valid <{plugins.Count}> plugins: {string.Join(" ", validPluginNames)}");
+
             // Do not wait for performance improvement
             /*if (string.IsNullOrEmpty(query.ActionKeyword))
             {
@@ -1386,6 +1395,8 @@ namespace Flow.Launcher.ViewModel
             // Local function
             async Task QueryTaskAsync(PluginPair plugin, CancellationToken token)
             {
+                App.API.LogDebug(ClassName, $"Wait for querying plugin <{plugin.Metadata.Name}>");
+
                 if (searchDelay && !homeQuery) // Do not delay for home query
                 {
                     var searchDelayTime = plugin.Metadata.SearchDelayTime ?? Settings.SearchDelayTime;
@@ -1426,6 +1437,8 @@ namespace Flow.Launcher.ViewModel
 
                 if (token.IsCancellationRequested) return;
 
+                App.API.LogDebug(ClassName, $"Update results for plugin <{plugin.Metadata.Name}>");
+
                 if (!_resultsUpdateChannelWriter.TryWrite(new ResultsForUpdate(resultsCopy, plugin.Metadata, query,
                     token, reSelect)))
                 {
@@ -1442,6 +1455,8 @@ namespace Flow.Launcher.ViewModel
 
                 if (_updateSource.Token.IsCancellationRequested) return;
 
+                App.API.LogDebug(ClassName, $"Update results for history");
+
                 if (!_resultsUpdateChannelWriter.TryWrite(new ResultsForUpdate(results, _historyMetadata, query,
                     _updateSource.Token)))
                 {
@@ -1537,6 +1552,8 @@ namespace Flow.Launcher.ViewModel
             // If last and current query are not home query, we need to check action keyword
             else if (_lastQuery?.ActionKeyword != query?.ActionKeyword)
             {
+                App.API.LogDebug(ClassName, $"Remove old results");
+
                 Results.Clear();
             }
         }