Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
hoc chiet » hoc thiet, hoc nhiet, hoc hien
cua nhung » va nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - ((hanh trang) or (hanh trinh)) cua nhung ((cong dan) or (cong san)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - ((hanh trang) OR (hanh trinh)) cua nhung ((cong dan) OR (cong san)) van ban.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - ((hanh trang) or (hanh trinh)) cua nhung ((cong dan) or (cong san)) van ban*.