Result source is new in SharePoint 2013, using result
source we can limit search results based on the search queries.
SharePoint 2010 search scopes are replaced by Result sources
in SharePoint 2013.
In SharePoint 2013 provides 16 predefined results are given
as shown in the below screen shot.
Local SharePoint Results are set to be a default result
source we can also specify existing or custom newly created result source as
default for a site collection or site.
To create a result source for a site collection.
Navigate to Site Settings->Search->Result Sources
Click on the Result Source there we can able to create a new
result source.
In the General Information section Enter the name.
Click on the Launch Query Builder
By default we can able to see the screen shot shown below.
If you want to search only particular list items in our entire
site using this result source.
In the Keyword filter
“select only returns items” click on Add
Keyword Filter.
In the Property
Filter “Select the Path” Contains Manual Value Enter the List URL Click on Add Property Filter.
Click on Test Query we can see the Results Preview,
Keep the default setting as it is.
Click on Save.
Set as default resource source as shown.
Now if we search in our site we can get search results only in
that particular list items in our entire site.