Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
dung cong » dung trong
cong san » cong tac
toan tai » toan tap, doanh tai, von tai
toan cao » toan tap
toan ban » van ban
tung va » trung va, tuong va, dung va
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: cao hieu tinh - thanh tung va dung cong san ((((toan tai) or (toan cao))) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cao hieu tinh - thanh tung va dung cong san ((((toan tai) OR (toan cao))) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: cao hieu tinh - thanh tung va dung cong san ((((toan tai) or (toan cao))) or (toan ban))*.