From what i learned from the TAC guys, they don't seem to have a way of doing this. all they can do is to detect the exact document only. and if we want to detect a docuement with alterations then we have to use regex (stupid answer).
and they also asked me to make a request to the mcafee asking them to inlcude my requirement as a feature or something. what disapoints me is that such a requirement is one of the basic needs of DLP and as i know some of the DLPs already have that.