When you perform a search in SharePoint:

To search for Confluence and SharePoint content from a SharePoint page,

  1. Select 'All Sites' in the search scope option. Note that your search scope cannot be 'This Site' or 'This List'.

  2. Enter your search words and click the 'Go Search' icon. Here is an example of the SharePoint search box:


  3. The search results page will open, showing the Confluence federated search results web part.