Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
anh tang » anh bang, anh dang, anh nang
anh dung » anh dong, anh huong, sach dung
ban cong » bang cong, van cong, phan cong
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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 - ((anh tang) OR (anh dung)) cua ban cong ((dan toan) OR (dan than)) ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((anh tang) or (anh dung)) cua ban cong ((dan toan) or (dan than)) ban*.