Your search +path:a +path:. +path:b +path:. +path:c +path:. +path:1 +path:. +path:2 +path:. +path:3 +path:. +path:c 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.