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

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 - hanh trinh hoan trinh cong van ((thanh thu) or (thanh ha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot chieu sach - hanh trinh hoan trinh cong van ((thanh thu) OR (thanh ha)).
• Adding a wildcard symbol may retrieve word variants: mot chieu sach - hanh trinh hoan trinh cong van ((thanh thu) or (thanh ha))*.