Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tranh hoan » trinh hoan, tran hoan, tranh toan
hoan trinh » khoan trich, hoang thinh, hanh trinh
trinh cong » trinh dung
thanh thu » thanh thuy, thanh tu, khanh thu
thanh cha » thanh ha, thanh nha, thanh phan
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: mot chieu sach - canh tranh hoan trinh cong van ((thanh thu) or (thanh cha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot chieu sach - canh tranh hoan trinh cong van ((thanh thu) OR (thanh cha)).
• Adding a wildcard symbol may retrieve word variants: mot chieu sach - canh tranh hoan trinh cong van ((thanh thu) or (thanh cha))*.