Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
tien manh » tien anh, tieng anh, tran manh
doanh cua » doanh luan
cua nhung » va nhung
san chat » van chat, san chay, san nhat
ban chat » van chat, bao chat, luan chat

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: hoc ((tien manh) OR (tien thanh)) - canh doanh cua nhung cong ((san chat) OR (ban chat)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien manh) or (tien thanh)) - canh doanh cua nhung cong ((san chat) OR (ban chat)) cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) or (tien thanh)) - canh doanh cua nhung cong ((san chat) OR (ban chat)) cao*.