Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
canh doanh » hanh doanh, chinh doanh, kinh doanh
nhieu tang » chieu sang, nhiet nang
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hieu lang » chieu sang, hieu quang, hieu van
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((nhieu tang) OR (hieu lang)) - ((canh doanh) or (doanh doanh)) luan chung cong toan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((nhieu tang) OR (hieu lang)) - ((canh doanh) OR (doanh doanh)) luan chung cong toan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((nhieu tang) OR (hieu lang)) - ((canh doanh) or (doanh doanh)) luan chung cong toan phan cac".
• Adding a wildcard symbol may retrieve word variants: ho ((nhieu tang) OR (hieu lang)) - ((canh doanh) or (doanh doanh)) luan chung cong toan phan cac*.