Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, thong thong, phong chong
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 tranh cua ((thong cong) OR (tong cong)) danh ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - hanh tranh cua ((thong cong) OR (tong cong)) danh ((toan cau) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh tranh cua ((thong cong) OR (tong cong)) danh ((toan cau) or (toan tap))*.