Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
doi chieu » doc hieu, doi chi, ho chieu
trong tac » trong cac, tuong tac, trong tan
trung va » truong va, trang va, trung ha
tac toan » tap toan, tam toan, hach toan
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: doi chieu sach - manh ((trung va) or (truong cao)) dung trong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - manh ((trung va) OR (truong cao)) dung trong tac toan tap*.