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
tam nhung » tham nhung, cam nhung, nam nhung
cong tam » cong tac, cong tan, cong nam
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 - thanh cong tam nhung cong ((((dan toan) OR (anh tuan))) OR (dan than)) cao~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh cong tam nhung cong ((((dan toan) or (anh tuan))) or (dan than)) cao*.