Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh qua » trinh quan, trinh cua, trinh quang
qua nhung » quan nhung, cua nhung, qua chung
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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 qua nhung ((cong ban) OR (cong tan)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh qua nhung ((cong ban) OR (cong tan)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh qua nhung ((cong ban) OR (cong tan)) than cau*.