Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
dang van » hoang van, hang va
van dau » van dao, phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh doanh luan ((dang cong) or (dung cong)) dang van dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh doanh luan ((dang cong) OR (dung cong)) dang van dau*.