Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
anh dong » anh huong
anh bang » anh hoang, anh quang, tinh bang
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
anh son » tinh son

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 - ((((anh dong) OR (anh son))) or (anh bang)) cua dung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((((anh dong) OR (anh son))) OR (anh bang)) cua dung cong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((((anh dong) OR (anh son))) or (anh bang)) cua dung cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((((anh dong) OR (anh son))) or (anh bang)) cua dung cong dan than cau*.