Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hien manh » hien hanh, tien manh, hieu manh
tranh cua » doanh cua, manh cua
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
dang hang » dang hoang, dang hung, dang hanh
hang cac » hang ca, hang cau, bang cac

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 manh - hanh tranh cua ((cong cong) or (dung cong)) dang hang cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien manh - hanh tranh cua ((cong cong) OR (dung cong)) dang hang cac*.