Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cua dang » cua cong, cua ban
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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: doc hieu xanh - hanh trinh ((cua nhung) OR (cua dang)) ((cong dan) OR (cong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh trinh ((cua nhung) or (cua dang)) ((cong dan) OR (cong san)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh ((cua nhung) or (cua dang)) ((cong dan) OR (cong san)) toan cau*.