Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
thang van » tang van, thong van, thang va
thanh van » thanh san, thanh toan, thanh phan
dang cong » dung cong
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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 - cang ((thang van) OR (thanh van)) dang cong ((dan than) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - cang ((thang van) OR (thanh van)) dang cong ((dan than) or (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - cang ((thang van) OR (thanh van)) dang cong ((dan than) or (ban than)) cau*.