Perhaps you should try some spelling variations:
thanh trung » thanh tung
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
hua khong » hoa khong, hoac khong, phuc khong
cua khong » cua phuong, cua thuong, cua cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chieu)) xanh - thanh trung ((hua khong) or (cua khong)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) xanh - thanh trung ((hua khong) OR (cua khong)) cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) xanh - thanh trung ((hua khong) or (cua khong)) cong tac toan cau*.