Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
cong thanh » dong thanh, cong trinh, cong tan
dung cong » dung trong
thanh cha » thanh ha, thanh nha, thanh phan
tranh va » tranh van, trang va, trinh va
va dung » van dung, va duong, vat dung
cha tu » chai tu, chay tu, chua tu

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) or (chieu sach)) - canh tranh va dung cong thanh cha tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - canh tranh va dung cong thanh cha tu.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - canh tranh va dung cong thanh cha tu*.