Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
cua hang » cua dang, cua ban, cua dan
cong van » cong vang, cong san, song van
van luan » van quan, van tuan, von luan
luan ban » luan van, luan san, luan han

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 - hanh tranh ((((cua hang) OR (cua cong))) OR (cua nhung)) cong van luan ban~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tranh ((((cua hang) or (cua cong))) or (cua nhung)) cong van luan ban*.