Try the Skoll scholarship in Said Business School (University of Oxford). One of Said business school's strengths is social entrepreneurship, and its skolls center provide full scholarships for people who want to have a focus on social entreprenuership/social financie/social venture. Hope this is helpful! Good luck!
In addition, if anyone knows any other scholarship that we could apply, please list up here so we all can share. I so far only know Skoll scholarship and QS MBA community scholarship.