Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
cong huong » cong thuong, cong luong, cong hung
hieu lang » hieu quang, nhieu tang, hieu van
tranh vat » trinh vat, tranh va, tranh van
cong hang » cong thang, cong hung, cong lang
vat dung » van dung, va dung, viet dung

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