Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
canh doanh » hanh doanh, chinh doanh, kinh doanh
cong doanh » cong danh, cong doan, rong doanh
dong doanh » dung doanh, trong doanh, dong thanh
hieu lang » chieu sang, hieu quang, nhieu tang
cua trong » cua truong, cua trung, qua trong
phan dau » phan tu, hang dau
ho hieu » ho chieu, hoi hieu, nho hieu

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: ho hieu lang - ((canh doanh) OR (doanh doanh)) cua trong ((cong doanh) OR (dong doanh)) phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((canh doanh) or (doanh doanh)) cua trong ((cong doanh) OR (dong doanh)) phan dau~".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((canh doanh) or (doanh doanh)) cua trong ((cong doanh) OR (dong doanh)) phan dau*.