Perhaps you should try some spelling variations:
hien nhanh » thien thanh, tien thanh, dien thanh
thanh hang » thanh hoang, thanh thang, tranh hang
hien hanh » dieu hanh
dang cong » dung cong
hang cua » mang cua, hang ca, huong cua
cua dang » cua cong, cua ban
cong ban » cong bang, cong san, cong tan
phan cau » phan dau, phan cac, phan tu
than cap » khan cap, thanh lap, thanh cac

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 ((hien nhanh) OR (hien hanh)) - thanh hang cua dang cong ban ((phan cau) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (hien hanh)) - thanh hang cua dang cong ban ((phan cau) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (hien hanh)) - thanh hang cua dang cong ban ((phan cau) or (than cap))*.