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
trung va » truong va, trang va, trung ha
cong dan » huong dan, cong dong, cong tac
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
than man » than ma, thanh san, tran manh

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 va nhung ((((cong dan) or (cong san))) or (cong tan)) than man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trung va nhung ((((cong dan) OR (cong san))) OR (cong tan)) than man.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trung va nhung ((((cong dan) or (cong san))) or (cong tan)) than man*.