Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
cong phan » cong nhan, cong khan, chong phap
phan tong » phan trong, phan cong, han tong
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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 (chinh sach)) - thanh cong phan tong cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - thanh cong phan tong cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chinh sach)) - thanh cong phan tong cong san phan cau*.