Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, hanh trinh, minh trang
hoc chieu » hoc thieu, ho chieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
trong mot » trong moi, trong trot, trong hoat
cong do » cuong do, cong dot, cong so

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 trang) or (canh tranh)) cua thong ((cong do) or (trong mot)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((hanh trang) OR (canh tranh)) cua thong ((cong do) OR (trong mot)) van ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh trang) or (canh tranh)) cua thong ((cong do) or (trong mot)) van ban*.