Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh hoac » trinh hoa, trinh hoan, trinh han
hoac khong » hoa khong, hoc khong, hay khong
khong cong » thong cong, khong cang, chong cong
hoc chieu » hoc thieu, ho chieu, hoc hien
thanh lap » thanh san, phan lap, thanh hai
cong dan » cong san, cong tan, huong dan
than cap » khan cap, thanh cac, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh trinh hoac khong cong dan ((than cap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh hoac khong cong dan ((than cap) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh hoac khong cong dan ((than cap) or (thanh lap))*.