Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu sach » chinh sach, chieu sang, chieu xanh
cong cong » cong dong, trong cong, dung cong
than phan » thanh phan, toan phan, thanh pham
thong tu » phong tuc, thong tin, thong ke
tan phan » toan phan, van phan, tai phan
tu cong » thu cong, te cong, tai cong

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 sach) or (chiet tach)) - thanh thong tu cong cong ((tan phan) or (than phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - thanh thong tu cong cong ((tan phan) OR (than phan)) tu.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - thanh thong tu cong cong ((tan phan) or (than phan)) tu*.