Perhaps you should try some spelling variations:
chiet tach » chieu sach
doi chiet » doi chieu, doi chi, doi viet
nam nhung » cam nhung, tham nhung, va nhung
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cau » toan cau, phan cau, than cap
ca nung » cua nhung, va nhung, tay nung

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 chinh ((ca nung) or (nam nhung)) cong tac than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - hanh chinh ((ca nung) OR (nam nhung)) cong tac than cau.
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - hanh chinh ((ca nung) or (nam nhung)) cong tac than cau*.