Hi Keren tsur,
By default, the
search results are displayed differently so that you can easily differentiate between the different types of search results
To display search results differently like this, search results are sorted into result
types. A result type is a classification of a search result. For example, if a search result is found in a Microsoft PowerPoint presentation, the search result belongs to the Microsoft
PowerPoint result type. If a search result is found in a PDF file, the search result belongs to the PDF result type.
In a SharePoint Search Center, search results are displayed in a Search Results Web Part.
To control how the search results are displayed, two types of display templates are used:
-
The item display template controls how the information in the body of the Search Results Web Part is displayed.
-
The hover panel display template controls how the information in the hover panel is displayed.
Check this msdn article to change the result set as per your need.
http://technet.microsoft.com/en-us/library/dn794212(v=office.15).aspx