Perhaps you should try some spelling variations:
nhiet tang » nhiet nang, nhieu tang, nhiet dong
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
phung cong » nhung cong, phong cong, nhung chong
hoc nhiet » hoc thiet, hoc nghien, hoc hien
hung cong » nhung cong, hung cuong, dung cong
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhiet tang - canh doanh luan ((hung cong) or (phung cong)) dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhiet tang - canh doanh luan ((hung cong) OR (phung cong)) dan van ban*.