diff --git a/src/Common.js b/src/Common.js
index dda0693..b8bc0b3 100644
--- a/src/Common.js
+++ b/src/Common.js
@@ -233,10 +233,13 @@ export class HighlightedMarkdown extends Component {
               } catch (e) {}
             } else {
               let search_kws = (
-                props.search_param.match(/"[^"]*"|[^\s()+:"[\]-]+/g) || []
+                props.search_param.match(/"[^"]*"|'[^']*'|[^\s()+:"'[\]-]+/g) ||
+                []
               )
                 .map((s) =>
-                  s.startsWith('"') ? s.slice(1, -1) : s.split('^')[0],
+                  s.startsWith('"') || s.startsWith("'")
+                    ? s.slice(1, -1)
+                    : s.split('^')[0],
                 )
                 .filter((s) => s);
               if (search_kws.length) {