Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh toan » thanh hoa, thanh san, tinh toan
doi chieu » doc hieu, doi chi, ho chieu
hanh tran » hanh trang, thanh tran, hanh tram
van nhung » van nhuong, va nhung, van hung
manh toan » anh tuan, tinh toan
tran 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 (theo tieu)) xanh - hanh tran van nhung cong ((manh toan) OR (thanh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (theo tieu)) xanh - hanh tran van nhung cong ((manh toan) OR (thanh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (theo tieu)) xanh - hanh tran van nhung cong ((manh toan) OR (thanh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (theo tieu)) xanh - hanh tran van nhung cong ((manh toan) OR (thanh toan)) cao*.