Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh van » tran van, trinh van, tranh ban
thanh van » thanh san, thanh toan, thanh phan
tong cong » trong cong, cong cong, dung cong
bang cong » dang cong, bang song, hang cong
van quan » van ban
quan ha » quan he

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 - canh ((tranh van) OR (thanh van)) ((tong cong) OR (bang cong)) van quan ha~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh ((tranh van) or (thanh van)) ((tong cong) or (bang cong)) van quan ha*.