Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
hien xanh » hien hanh, chieu xanh, hien khanh
tranh cua » doanh cua, manh cua
ban trong » bai trong, ban tuong, ben trong
trong tap » trong thap, tong tap, trong tan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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