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
thong dan » thong van, tuong dan, thong den
cong dan » cong san, cong tan, huong dan
cua han » cua hang, cua nhan, cua phan
anh tu » anh tuan

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 han ((cong dan) or (thong dan)) anh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh tranh cua han ((cong dan) OR (thong dan)) anh tu.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh tranh cua han ((cong dan) or (thong dan)) anh tu*.