Perhaps you should try some spelling variations:
truong quann » truong quang, trong quan, trong quang
truong quan » trong quan, thong quan, luong quan
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
hach toan » thanh toan, manh toan
tac toan » tap toan, tam toan, tich toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((truong quan) OR (truong quann)) dung cong ((tac toan) OR (hach toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((truong quan) or (truong quann)) dung cong ((tac toan) OR (hach toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((truong quan) or (truong quann)) dung cong ((tac toan) OR (hach toan)) cau*.