Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung vat » trung va, trung van, trong vat
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
vat dung » van dung, va dung, viet dung
dan toan » van toan, dan than, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chiet tach)) - thanh trung vat dung cong ((dan toan) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chiet tach)) - thanh trung vat dung cong ((dan toan) OR (manh toan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chiet tach)) - thanh trung vat dung cong ((dan toan) or (manh toan)) cao*.