Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hien hach » thien hach, hien hanh, hien nhanh
tranh va » tranh van, trang va, trinh va
ban than » ban thanh, van thanh, ban hang
van chat » cao chat
van than » van thanh, van thang, van 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 hach - hanh tranh va nhung cong ((((ban than) or (van chat))) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hach - hanh tranh va nhung cong ((((ban than) OR (van chat))) OR (van than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien hach - hanh tranh va nhung cong ((((ban than) or (van chat))) or (van than)) cau*.