Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
canh tran » canh tranh, hanh trang, banh trang
van nhung » van nhuong, va nhung, van hung
ho chieu » theo chieu, hoc thieu, mot chieu
tran van » luan van
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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

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