Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, khanh thuong
thanh phuong » thanh huong, thanh chuong, khanh phong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu
va dung » van dung, va duong, vat dung

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 sach)) - ((thanh thuong) or (thanh phuong)) va dung cong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - ((thanh thuong) OR (thanh phuong)) va dung cong tan phan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (chieu sach)) - ((thanh thuong) or (thanh phuong)) va dung cong tan phan cau*.