Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung cua » truong cua, trung tuan, trung cap
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
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 ((chiet tach) or (chieu tinh)) - thanh trung cua dong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (chieu tinh)) - thanh trung cua dong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (chieu tinh)) - thanh trung cua dong cong tac toan cau*.