Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, mot chieu
quan tran » quang tran, quan tren, xuan tran
tran hung » tran hong, tran quang, tran hoang
hung cong » nhung cong, hung cuong, phung cong
hach toan » thanh toan, manh toan
anh quan » anh tuan, ban quan, anh nhan
tac toan » tap toan, tam toan, tich toan

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 - anh quan tran hung cong ((tac toan) or (hach toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - anh quan tran hung cong ((tac toan) OR (hach toan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - anh quan tran hung cong ((tac toan) or (hach toan)) cau*.