Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
dang cong » dung cong
anh tang » anh nang, anh sang, anh tong
anh dang » anh dong, anh dung, anh danh
anh bang » anh hoang, anh quang, tinh bang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap
va dang » van dang, va nang, va lang

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 tang) or (anh dang))) or (anh bang)) va dang cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((((anh tang) OR (anh dang))) OR (anh bang)) va dang cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((((anh tang) or (anh dang))) or (anh bang)) va dang cong dan than cao*.