Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, hanh trinh, minh trang
cong huong » cong thuong, cong luong, cong hung
ho chieu » theo chieu, hoc thieu, doi chieu
chan ban » can ban, chat ban, chan doan
chan nan » chan nhan, chang nang, chan doan

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 trang) or (canh tranh)) cua cong huong dan ((chan ban) or (chan nan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trang) OR (canh tranh)) cua cong huong dan ((chan ban) OR (chan nan)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh trang) or (canh tranh)) cua cong huong dan ((chan ban) or (chan nan))*.