Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, thi hien
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
tran van » luan van
cong tan » cong tac, cong san, cong thanh

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: ((theo chieu) OR (thi chieu)) tinh - hanh tran van nhung cong tan ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (thi chieu)) tinh - hanh tran van nhung cong tan ((toan ban) OR (van ban))~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (thi chieu)) tinh - hanh tran van nhung cong tan ((toan ban) OR (van ban))*.