Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cap » trung tam
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
chat ban » nhat ban, chat ran, cua ban

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