Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
chieu sach » chiet tach, chieu sang, chieu xanh
doanh luan » doanh nhan
luan duong » tuan duong, luan luong, luan dong
duong cong » dung cong, luong cong, duong trong
van tan » van tuan, van ban, van thanh
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chinh sach)) - chinh doanh luan duong cong ((van tan) OR (van tai)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - chinh doanh luan duong cong ((van tan) OR (van tai)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chinh sach)) - chinh doanh luan duong cong ((van tan) OR (van tai)) tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - chinh doanh luan duong cong ((van tan) OR (van tai)) tap*.