Wild guess: you deleted your apps backup folder but are interested in recovering a subfolder??
First off, the bigger or more files the tougher it will be to recover them.
Secondly if you deleted them a long ime ago you have even less chances.
Thirdly if you performed many operations on your phone after deleting them you have even less chances (downloading stuff copying doing stuff anything).
On android hexamob recovery pro is good but i think you need root.
If not plug in your phone to pc and use the recuva mentioned above. Dont expect miracles, your files may have changed name or have been corrupted.
Sent from my GT-I9300 using xda app-developers app