Help needed to apply for Ph.D Business with 3+ years of Work Experience

[Bhavana12]

Hello all,
   I have a GRE Score of 294 taken in 2014. IELTS score is 7. Done Masters in Computer Science in USA with ~3.3 GPA with 3+ years of IT work experience and 6+ years of Leadership experience in different NPO's, Volunteer work and many achievements in the field of Social work. I wanted to do Phd in Business/Public Administration to do research on Self Sustainable model for very poor (low income villages) so that children in the village can go to schools and concentrate on education.

I need help in selecting Universities in which I can admit (Looking for top schools). If I can get into top schools or not?