Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
song cong » cong cong, tong cong, song hong
tung lam » dung lam, truong lam, trong lam
lam song » lam sang, lam dong, lam son
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tinh) or (chieu sach)) - thanh tung lam song cong ((xuan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chieu sach)) - thanh tung lam song cong ((xuan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chieu sach)) - thanh tung lam song cong ((xuan toan) or (dan than)) cau*.