You can try other data recovery programs. Just run a search for 'data recovery software.' My apologies, I don't have any specific software recommendations for you.

Also: the file may be unrecoverable. Sometimes if you delete something, then write/save more data to the USB stick (or other drive), the new data overwrites the 'places' where the deleted data was still 'living.' If this happens, your file may not be salvageable.