Perhaps you should try some spelling variations:
thanh tung » thanh cong
chua tinh » cha tinh, thuat tinh, chua benh
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
vang than » sang than, van than, cang thang
cua tinh » cua sinh, va tinh, ha tinh
vat dung » van dung, va dung, viet dung
than cao » toan cao, thai cao, than cap

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: ho ((chua tinh) OR (cua tinh)) - ((thanh trung) OR (thanh tung)) vat dung cong vang than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chua tinh) or (cua tinh)) - ((thanh trung) OR (thanh tung)) vat dung cong vang than cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((chua tinh) or (cua tinh)) - ((thanh trung) OR (thanh tung)) vat dung cong vang than cao*.