Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thuong chau » phuong cham, thuong chi, thuong han
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sang) OR (chieu sach)) - thanh thuong chau ((dung cong) or (dung trong)) tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (chieu sach)) - thanh thuong chau ((dung cong) OR (dung trong)) tac than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sang) OR (chieu sach)) - thanh thuong chau ((dung cong) or (dung trong)) tac than cau".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) OR (chieu sach)) - thanh thuong chau ((dung cong) or (dung trong)) tac than cau*.