Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » hanh chinh
chong cong » cong cong, thong cong, cuong cong
cua chong » cua cong, cua chung, cua khong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - ((hanh trinh) or (canh tranh)) cua chong cong tam toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trinh) OR (canh tranh)) cua chong cong tam toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh trinh) or (canh tranh)) cua chong cong tam toan ban*.