Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
cong nong » cong dong, cong cong, cong trong
nong dan » cong dan, nong san, nguong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
tinh » trinh, dinh, kinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((trieu (tinh or minh)) or (hieu lang)) - canh doanh cua cong nong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((trieu (tinh OR minh)) OR (hieu lang)) - canh doanh cua cong nong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((trieu (tinh or minh)) or (hieu lang)) - canh doanh cua cong nong dan toan ban*.