Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
nhung don » nhung van, nhung bo
hang nong » thang long, han tong
van khan » van khanh, van khang, van phan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) OR (chieu sang)) - canh doanh cua ((nhung don) or (hang nong)) van khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - canh doanh cua ((nhung don) OR (hang nong)) van khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chieu sang)) - canh doanh cua ((nhung don) or (hang nong)) van khan cap".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chieu sang)) - canh doanh cua ((nhung don) or (hang nong)) van khan cap*.