Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh cong » trinh dung
cong dung » cuong dung, cong dong, cong luong
ho chieu » theo chieu, hoc thieu, doi chieu
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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 cong dung trong ((dan than) OR (van than)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh cong dung trong ((dan than) OR (van than)) cap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh cong dung trong ((dan than) OR (van than)) cap*.