theres a small issue when searching for Urdu titles using the romanization of Urdu. There is no standard for converting it. So the library cards that are on display seem to use a different spelling to the search provider.
for instance, the library cards will say 'AEK' whereas the search provider will have the equivalent spelling of 'EK', with both words meaning the same thing in urdu (phonetically).
it may well be the case that a significant number of matches can't be made. maybe others have had more luck?