Can I get my documents back which I had submitted during the admission?

Unless you have some contractual obligation with the institute, your employer or the Government or you are the recipient of some scholarship from the Central Government(for example : GATE scholarship) or State Government which incorporates such agreements as to complete the course or return the enti

Little bit confused here. You must submitted photocopies of your original docs, didn't you? If yes, then why do you need back those?