Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
van doanh » toan doanh, van dong, van thanh
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
hang cong » dang cong, hang nong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
hieu van » hieu va, thien van, lieu va
toan cao » toan ban, toan tap

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) OR (hieu van)) - van doanh cua ((nhung cong) OR (hang cong)) manh toan cao~.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu van)) - van doanh cua ((nhung cong) or (hang cong)) manh toan cao*.