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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - hanh tranh cua tong cong tap ((((toan cau) or (toan tai))) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh tranh cua tong cong tap ((((toan cau) OR (toan tai))) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh tranh cua tong cong tap ((((toan cau) or (toan tai))) or (toan cao))*.