Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, ho chieu
hanh tran » hanh trang, thanh tran, hanh tram
theo chu » theo chieu, cho chu, chao chu
tran van » luan van
van dung » van dong, xay dung, tin dung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban

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