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 dang » cua ban
cong tac » cong ty
tac tuan » tac quan, ta tuan, tai tuan
tuan ban » tuan bang, toan ban, luan ban

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tranh ((((cua dang) OR (cua cong))) OR (cua nhung)) cong tac tuan ban~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tranh ((((cua dang) OR (cua cong))) OR (cua nhung)) cong tac tuan ban*.