most of time, it is impossible.
a trick to recover ? well, it is simple and it is working on...
put your files in a folder an why not in an another, then delete it.
find a software to recover, well recuva why not, and you can notice that it is easier to recover cleanly and fully like that.
to undelete a file you must say to your computer that it is prohibited, so or
you crypted it, or you put it in a special folder or you put files in several folders,one after the other (3 at least).