Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
thanh dung » thanh duong, thanh tung, thanh hung
phan cuong » phan cong, phan xuong, phan cung
cuong danh » cuon danh, huong dan, cuong linh
dung hoc » dong hoc, dung thuoc, trung hoc
hoc phan » hoc dan, hoc pho
danh van » doanh van, dang van, dinh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) or (chieu xanh)) - thanh dung hoc phan cuong danh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu xanh)) - thanh dung hoc phan cuong danh van ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chieu xanh)) - thanh dung hoc phan cuong danh van ban*.