Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
bien tinh » bi tinh, yen tinh, diep tinh
cua thong » cua thuong, cua khong, suat thong
cua tong » cua cong, cua dong, cua nong
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: ho ((chieu tinh) or (bien tinh)) - thanh trung ((cua thong) or (cua tong)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (bien tinh)) - thanh trung ((cua thong) OR (cua tong)) cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (bien tinh)) - thanh trung ((cua thong) or (cua tong)) cong tac toan cau*.