Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, ha tinh, cua tinh
tanh dung » thanh dung, tinh dung, manh dung
anh dung » anh dong, anh huong, sach dung
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan tap » han tap, phan tap, chan ta

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chau tinh)) - ((anh dung) or (tanh dung)) va nhung cong dan chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chau tinh)) - ((anh dung) OR (tanh dung)) va nhung cong dan chan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chau tinh)) - ((anh dung) or (tanh dung)) va nhung cong dan chan tap*.