Perhaps you should try some spelling variations:
thuoc dieu » thuc dieu, hoc dieu, thuat dieu
nhung cong » dung cong, thong cong, hang cong
dieu danh » dieu hanh, tieu danh, dia danh
tranh va » tranh van, trang va, trinh va
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc dieu danh - canh tranh va nhung cong ((dan toan) or (ban than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc dieu danh - canh tranh va nhung cong ((dan toan) OR (ban than)) ban*.