Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh dong » thanh duong, thanh cong, hanh dong
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
dong dat » dong vat, dong ha, dong tai
dan dung » van dung, tin dung, ap dung
dung dat » dung va, dung 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 dong dat ((dung cong) or (dang cong)) dan dung dat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh dong dat ((dung cong) OR (dang cong)) dan dung dat.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh dong dat ((dung cong) or (dang cong)) dan dung dat*.