Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tieu tinh » trieu tinh, tieu trinh, lieu tinh
hanh dang » hanh dong, anh dang, hanh dung
van nhung » van nhuong, va nhung, van phung
van hung » van dung, manh hung, van duong
cong tan » cong tac, cong san, cong ty
san cao » san co, san cho, san bao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh dang ((van nhung) OR (van hung)) ((cong thanh) OR (cong tan)) san cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - hanh dang ((van nhung) or (van hung)) ((cong thanh) OR (cong tan)) san cao~".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh dang ((van nhung) or (van hung)) ((cong thanh) OR (cong tan)) san cao*.