Hello Awais
Universities around the world, may not have a PhD program in the exact same title of Public Administration. Depending upon country, you need to check research profiles of academic staff in the Humanities or Management Departments whose work is closer to your area.
As far as funding is concerned, try to do a good thesis and produce a couple of research papers in some good journals. Build your profile, discuss with research staff in your university, look up the Internet and you may well find some suitable resource.
Good Luck.