Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
trung tuan » trung thanh, trung tam, tran tuan
hieu manh » chieu xanh, dieu hanh, hien hanh
trung cua » truong cua, trung cap, dung cua
bang cong » dang cong, bang song, hang cong
cong san » cong tac
san than » sang than, san thanh, ban than
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: hoc ((hieu manh) OR (hieu nganh)) - thanh ((trung cua) or (trung tuan)) bang cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - thanh ((trung cua) OR (trung tuan)) bang cong san than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (hieu nganh)) - thanh ((trung cua) or (trung tuan)) bang cong san than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (hieu nganh)) - thanh ((trung cua) or (trung tuan)) bang cong san than cap*.