Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » hanh trinh, hanh trang, lanh tranh
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong tap » cuong tap, cong tan, tong tap
cong tac » cong ty
doan dau » doan dieu, phan dau, doan va

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: ho chieu sach - ((hanh tranh) OR (canh tranh)) cua nhung ((cong tap) OR (cong tac)) doan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh tranh) or (canh tranh)) cua nhung ((cong tap) OR (cong tac)) doan dau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh tranh) or (canh tranh)) cua nhung ((cong tap) OR (cong tac)) doan dau*.