Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, thong cong, hang cong
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca cau

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 - hanh ((mang cua) OR (dung cua)) nhung cong dan ((chan cau) OR (can cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - hanh ((mang cua) OR (dung cua)) nhung cong dan ((chan cau) or (can cau))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh ((mang cua) OR (dung cua)) nhung cong dan ((chan cau) or (can cau))*.