diff --git a/archivebox/core/mixins.py b/archivebox/core/mixins.py
index 08c14a64..f41b2519 100644
--- a/archivebox/core/mixins.py
+++ b/archivebox/core/mixins.py
@@ -10,10 +10,10 @@ class SearchResultsAdminMixin:
 
         search_term = search_term.strip()
         if not search_term:
-            return qs, use_distinct
+            return qs.distinct(), use_distinct
         try:
             qsearch = query_search_index(search_term)
-            qs = qs | qsearch
+            qs = qs & qsearch
         except Exception as err:
             print(f'[!] Error while using search backend: {err.__class__.__name__} {err}')
             messages.add_message(request, messages.WARNING, f'Error from the search backend, only showing results from default admin search fields - Error: {err}')