Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chiet » doi chieu, doi chi, doi viet
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - hanh tranh cua nhung ((cong san) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - hanh tranh cua nhung ((cong san) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - hanh tranh cua nhung ((cong san) or (cong tac)) toan cao*.