How to/or 3rd party mobile app to perform wildcard and multiple folder searches on WD Passport?

I have a wifi access, 2TB Western Digital Passport hard drive… accessed primarily on my Samsung Galaxy 5…

I’m trying to collate mass amounts of archived data… 

But not only have I not worked out a directory explorer that responds correctly to (*. *) wildcard searches, but the provided interface does not search multiple folders. 

Is there a technique I am overlooking? 

Or better yet, is there another compatible directory explorer (like ES File Explorer) that accomodates broader search criteria? 

Hi there and welcome to the WD community.

You can try some file explorers to see if it is possible to to do this but i have not tried this, lets see if another user can share some information on this matter.