Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
anh tang » anh dang, anh nang, anh sang
anh bang » anh hoang, anh quang, tinh bang
qua dung » quang dung, su dung, qua song
cac toan » cac khoan, hach toan, cac thanh
toan tap » toan ban

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 (chieu tinh)) - ((anh tang) or (anh bang)) qua dung trong cac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu tinh)) - ((anh tang) OR (anh bang)) qua dung trong cac toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu tinh)) - ((anh tang) or (anh bang)) qua dung trong cac toan tap*.