Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hanh trung » thanh trung, hanh trang, manh trung
hieu manh » chieu xanh, dieu hanh, hien hanh
trung cap » truong cao, trung tam
cap dang » cao dang, cac dang, cap bang
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) OR (hieu nganh)) - hanh trung cap dang ((cong dan) or (cong tac)) phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - hanh trung cap dang ((cong dan) OR (cong tac)) phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (hieu nganh)) - hanh trung cap dang ((cong dan) or (cong tac)) phan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (hieu nganh)) - hanh trung cap dang ((cong dan) or (cong tac)) phan tap*.