Perhaps you should try some spelling variations:
thanh tung » thanh cong
hanh trang » thanh trung, canh tranh, hanh trinh
doi chieu » doc hieu, doi chi, ho chieu
mot chieu » ho chieu
cong cong » cong dong, trong cong, dung cong
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: ((doi chieu) or (mot chieu)) xanh - ((thanh tung) or (hanh trang)) cua cong cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (mot chieu)) xanh - ((thanh tung) OR (hanh trang)) cua cong cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (mot chieu)) xanh - ((thanh tung) or (hanh trang)) cua cong cong tan van ban*.