Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
trong xay » thong xay, trong ca, trong san
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh ((trong xay) OR (trong cac)) dung cong ban than cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((trong xay) OR (trong cac)) dung cong ban than cau*.