Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
canh sinh » canh tinh, canh binh, tinh sinh
doc hieu » toc thieu, hoc thieu, hoc hien
sinh cua » manh cua, dinh cuu, sinh va
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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 nganh - canh sinh cua dung ((cong dan) or (cong tan)) ((than cap) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - canh sinh cua dung ((cong dan) OR (cong tan)) ((than cap) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - canh sinh cua dung ((cong dan) or (cong tan)) ((than cap) or (phan tu))*.