Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
doanh cua » doanh luan
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
phan dau » hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sach) OR (chiet tach)) - canh doanh cua nhung cong dan ((phan tu) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (chiet tach)) - canh doanh cua nhung cong dan ((phan tu) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sach) OR (chiet tach)) - canh doanh cua nhung cong dan ((phan tu) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) OR (chiet tach)) - canh doanh cua nhung cong dan ((phan tu) or (phan dau))*.