Perhaps you should try some spelling variations:
thanh luan » tranh luan, thanh xuan, thanh tuan
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, mot chieu
van thong » van thuong, van phong, va thong
ho chieu » theo chieu, hoc thieu, mot chieu
cong san » cong tac
toan cao » toan ban, toan tap

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 (ho chieu)) xanh - thanh luan van thong ((cong san) or (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - thanh luan van thong ((cong san) OR (cong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) xanh - thanh luan van thong ((cong san) or (cong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) xanh - thanh luan van thong ((cong san) or (cong thanh)) toan cao*.