Perhaps you should try some spelling variations:
nhung nong » nhung cong, nhung bong, nhung chong
hanh tranh » hanh trinh, hanh trang, lanh tranh
thanh phan » thanh pho, thanh san, thanh toan
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
thanh hai » thanh hoa, thanh san
doi hieu » doi chieu, doc hieu, doi hien
nong san » cong san, dong san, nong dan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - ((hanh tranh) OR (canh tranh)) cua nhung nong san ((thanh hai) OR (thanh phan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - ((hanh tranh) or (canh tranh)) cua nhung nong san ((thanh hai) OR (thanh phan))~".
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - ((hanh tranh) or (canh tranh)) cua nhung nong san ((thanh hai) OR (thanh phan))*.