Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
viet dung » viet hung, viet huong, viet trung
trong dan » trong dang, trong san, trong tan
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
than cao » toan cao, thai cao, than cap
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: ho chieu sang - thanh trung ((viet dung) or (va dung)) ((trong dan) or (cong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung ((viet dung) OR (va dung)) ((trong dan) OR (cong san)) than cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ((viet dung) or (va dung)) ((trong dan) or (cong san)) than cao*.