Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
quang dung » quang trung, ung dung, cuong dung
doi chieu » doc hieu, doi chi, mot chieu
anh quang » anh xquang, nhanh quang, tinh quang
anh quan » anh tuan, ban quan, anh nhan
dung tac » dung tai, dung cac, dung tay
quan ha » quan he

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