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
tranh cua » doanh cua, manh cua
tong cong » cong cong, dung cong, dang cong
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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 ((tong cong) OR (trong cong)) tan toan ban~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tranh cua ((tong cong) or (trong cong)) tan toan ban*.