Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
hanh tang » hanh trang, anh tang, hanh mang
van nhung » van nhuong, va nhung, van hung
doc hieu » toc thieu, hoc thieu, hoc hien
tang van » dang van, hoang van, trong van
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban

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 tang van nhung ((cong dan) OR (cong san)) toan ban~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh tang van nhung ((cong dan) OR (cong san)) toan ban*.