Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuong dan » huong dan, thuong han, thuong lan
thuong dam » thuong mai, huong dan, truong dai
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tran » hanh trang, thanh tran, hanh tram
van phong » hai phong

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 tran ((van phong) or (van dong)) ((thuong dan) OR (thuong dam)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh tran ((van phong) OR (van dong)) ((thuong dan) OR (thuong dam)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh tran ((van phong) or (van dong)) ((thuong dan) OR (thuong dam)) van ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh tran ((van phong) or (van dong)) ((thuong dan) OR (thuong dam)) van ban*.