Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tran » thanh trang, thanh toan, thanh tra
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
va dung » van dung, va duong, vat dung
hang ca » nang cao, hang tai, hang dau

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 tran) or (thanh trung)) va dung cong san ((hang ca) or (hang va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((thanh tran) OR (thanh trung)) va dung cong san ((hang ca) OR (hang va)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((thanh tran) or (thanh trung)) va dung cong san ((hang ca) or (hang va))*.