Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tung » thanh cong
cua thuong » cua truong, cua phuong, ca thuong
tung cua » trung cua, tuong cua, dung cua
cong san » cong tac
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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 hien nhanh - thanh tung cua thuong ((cong dong) OR (cong san)) ((khan cap) OR (khan ap))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - thanh tung cua thuong ((cong dong) OR (cong san)) ((khan cap) OR (khan ap))*.