Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
nhung don » nhung van, nhung bo
dung cong » dung trong
dan toan » van toan, dan than, manh toan
van tai » von tai, van tuan

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 - hanh tranh cua ((nhung don) OR (dung cong)) ((dan toan) OR (van tai)) cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh cua ((nhung don) or (dung cong)) ((dan toan) or (van tai)) cau*.