Your search +path:com +path:. +path:android +path:. +path:tests +path:. +path:apex +path:. +path:sdkextensions +path:. +path:is_at_least did not match any files.
Suggestions:

• Make sure all terms are spelled correctly.
• Try different keywords.
• Try more general keywords.
• Use 'wil*' cards if you are looking for partial match.