Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
thanh tung » thanh cong
tung quang » tuong quang, dung quang, hung quang
quang dung » quang trung, ung dung, cuong dung
thanh chau » thanh cham, thanh chu, thanh hai
dung cong » dung trong
cong lang » cong vang, cong luong, cong quang
thanh cha » thanh ha, thanh nha, thanh phan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: mot ((chieu sang) or (chieu sach)) - thanh tung quang dung cong lang ((thanh chau) or (thanh cha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot ((chieu sang) OR (chieu sach)) - thanh tung quang dung cong lang ((thanh chau) OR (thanh cha)).
• Adding a wildcard symbol may retrieve word variants: mot ((chieu sang) or (chieu sach)) - thanh tung quang dung cong lang ((thanh chau) or (thanh cha))*.