Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
trang tuan » tran tuan, trung tuan, trong tuan
tuan trong » thuan trong, quan trong, tran trong
hoc chieu » hoc thieu, ho chieu, hoc hien
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan ban » can ban, chat ban, chan nan

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 tuan trong ((cong dan) or (cong tan)) chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trang tuan trong ((cong dan) OR (cong tan)) chan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trang tuan trong ((cong dan) or (cong tan)) chan ban*.