backport-fix-issue-20716

Author: Nazar65

lib/internal/Magento/Framework/Search/Adapter/Mysql/Query/Builder/Match.php

@@ -24,7 +24,7 @@ class Match implements QueryInterface
     /**
      * @var string
      */
-    const SPECIAL_CHARACTERS = '+~/\\<>\'":*$#@()!,.?`=%&^';
+    const SPECIAL_CHARACTERS = '-+~/\\<>\'":*$#@()!,.?`=%&^';
 
     const MINIMAL_CHARACTER_LENGTH = 3;