Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
cang thang » cong thanh, dang thanh
hieu manh » chieu xanh, dieu hanh, hien hanh
thang vat » thang va, hang vat, tang vat
trong van » trong cac
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau
vat dung » van dung, va dung, viet dung

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (hieu nganh)) - cang thang vat dung trong van thanh cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (hieu nganh)) - cang thang vat dung trong van thanh cau*.