Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, theo chieu
hanh tang » hanh trang, hanh mang, hanh tung
cua nhung » va nhung
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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 tang) or (anh tang)) cua nhung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (theo tieu)) xanh - ((hanh tang) OR (anh tang)) cua nhung cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (theo tieu)) xanh - ((hanh tang) or (anh tang)) cua nhung cong tan van ban*.