Perhaps you should try some spelling variations:
hien thanh » thien thanh, hien hanh, tien thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong sang » cong lang, cong vang, cong bang
cong san » cong tac
ban nha » ban nhan, ban phap, ban than

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 thanh - hanh tranh cua nhung ((cong san) or (cong sang)) ban nha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien thanh - hanh tranh cua nhung ((cong san) OR (cong sang)) ban nha.
• Adding a wildcard symbol may retrieve word variants: hoc hien thanh - hanh tranh cua nhung ((cong san) or (cong sang)) ban nha*.