Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
trinh su » trinh tu, trinh san, trinh cau
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh trinh su dung ((cong van) OR (song van)) tuan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh trinh su dung ((cong van) OR (song van)) tuan ban".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh trinh su dung ((cong van) OR (song van)) tuan ban*.