Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
hoc chieu » hoc thieu, ho chieu, hoc hien
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
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 trung ((cua nhung) or (va nhung)) cong dan chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trung ((cua nhung) OR (va nhung)) cong dan chan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trung ((cua nhung) or (va nhung)) cong dan chan ban*.