Advanced Global Search can't search lowerCamelCased tokens after some special characters

More details in &3621 (comment 363429237)

Steps to reproduce

1. Create a file containing:

   MyJavaClass::javaLangMethodCall
   my_perl_object->perlMethodCall
   NotSureWhatLanguage:someMethodCall
   WouldHappenInManyLanguages,tokenAfterCommaWithNoSpace
   JustWeirdNowButPossible)someOtherToken

2. Search for any of the second tokens javaLangMethodCall, perlMethodCall, someMethodCall, tokenAfterCommaWithNoSpace, someOtherToken

What happens

You will see no results.

What is expected to happen

The file should match.