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

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - hanh trinh cua dung ((cong dan) or (cong tan)) ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh trinh cua dung ((cong dan) OR (cong tan)) ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh cua dung ((cong dan) or (cong tan)) ((toan cau) or (van ban))*.