Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, theo chieu
san thanh » ban thanh, van thanh, son thanh
thanh cac » hanh cac, thanh bac, thanh ca
trang va » hang va
tran van » luan van
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (theo tieu)) xanh - hanh ((trang va) or (tran van)) nhung cong san thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (theo tieu)) xanh - hanh ((trang va) OR (tran van)) nhung cong san thanh cac.
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (theo tieu)) xanh - hanh ((trang va) or (tran van)) nhung cong san thanh cac*.