Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh dung » thanh duong, thanh tung, thanh hung
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
dung xay » dang xay, dung may, dung tay
ban than » ban thanh, van thanh, ban hang
van tan » van tuan, van ban, van tai

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 dung xay dung cong ((van tan) or (ban than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh dung xay dung cong ((van tan) OR (ban than)) cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh dung xay dung cong ((van tan) or (ban than)) cao*.