Is there a filter/search option available for navigating the 'Find Content > Files' page?
The best thing to do here is create a custom VBO view to suit your needs!
It can have all the filters and sortable columns you want, and ... checkboxes so you can perform actions on the selected items.

See a guide here for using Views Bulk Operations.

Don't forget to set the views access permssions as you want to create an admin only vbo view !