Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
thi chieu » thi chien, thi hieu, theo chieu
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
toan cau » toan cao, toan ban, toan tap
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (ho chieu)) xanh - thanh ((tran van) OR (luan van)) dong cong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (ho chieu)) xanh - thanh ((tran van) OR (luan van)) dong cong thanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi chieu) or (ho chieu)) xanh - thanh ((tran van) OR (luan van)) dong cong thanh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (ho chieu)) xanh - thanh ((tran van) OR (luan van)) dong cong thanh toan cau*.