Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hien xanh » hien hanh, hien nhanh, chieu xanh
thanh cac » hanh cac, thanh bac, thanh ca
thanh lap » thanh san, phan lap, thanh hai
tran van » luan van
van hung » van dung, manh hung, van duong
cong dan » cong san, cong tan, cong dong

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: hoc hien xanh - thanh tran van hung ((cong dan) OR (huong dan)) ((thanh cac) OR (thanh lap))~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh tran van hung ((cong dan) or (huong dan)) ((thanh cac) or (thanh lap))*.