Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
bang cong » dang cong, bang song, hang cong
khoan cam » khoa cam, khoan va, phan cam
doc hieu » toc thieu, hoc thieu
tran van » luan van
van bang » van ban, van nang, von bang
cong san » cong tac
khan cap » khan ap, than cap, phan cac

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) nganh - thanh tran van bang cong san ((khan cap) OR (khoan cam))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc hien)) nganh - thanh tran van bang cong san ((khan cap) or (khoan cam))~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc hien)) nganh - thanh tran van bang cong san ((khan cap) or (khoan cam))*.