Perhaps you should try some spelling variations:
thanh trung » thanh tung
chau tinh » cuu tinh, ha tinh, cac tinh
chan dung » van dung, dan dung
cua tinh » cua sinh, va tinh, ha tinh
can dung » van dung, dan dung, tan dung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: o ((chau tinh) or (cua tinh)) - thanh trung ((can dung) OR (chan dung)) cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o ((chau tinh) OR (cua tinh)) - thanh trung ((can dung) OR (chan dung)) cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "o ((chau tinh) or (cua tinh)) - thanh trung ((can dung) OR (chan dung)) cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: o ((chau tinh) or (cua tinh)) - thanh trung ((can dung) OR (chan dung)) cong tan toan cao*.