Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
doanh va » doan va, doanh tai, doanh cua
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van 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 nhanh - canh doanh va nhung cong ((dan toan) OR (dan than)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - canh doanh va nhung cong ((dan toan) OR (dan than)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - canh doanh va nhung cong ((dan toan) OR (dan than)) ban*.