Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, bang song, hang cong
tranh va » tranh van, trang va, trinh va
tap doan » tap quan
doan ban » doanh ban, toan ban, doan van

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 thieu xanh - canh tranh va ((nhung cong) OR (bang cong)) tap doan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh va ((nhung cong) or (bang cong)) tap doan ban*.