Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
truong cua » truong ca, truong quan, truong cao
hieu manh » chieu xanh, dieu hanh, hien hanh
trung cap » truong cao, trung tam
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca

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: hoc ((hieu manh) OR (hieu nganh)) - thanh ((truong cua) OR (trung cap)) cong dan van tan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (hieu nganh)) - thanh ((truong cua) or (trung cap)) cong dan van tan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (hieu nganh)) - thanh ((truong cua) or (trung cap)) cong dan van tan cau*.