Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
cong hang » cong thang, cong hung, cong lang
hang ban » hang luan, hang va, hang tai
co lieu » cot lieu, co hieu, so lieu
va dung » van dung, va duong, vat dung
ban ban » ban banh, van ban, can ban

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

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