I guess you might have seen this issue before so please try to remember the fix as well. While configuring Search I find out that SharePoint 2013 Search gave me the following error on User Profile Crawling.
“Access is denied. Verify that either the Default Content Access Account has permission to access this repository, or add a crawl rule to crawl this repository…”
To Fix it we have to add our Content Access Account to be able to Crawl the content.
To do so we will go to Manage Service Application.
Now Select the User Profile Service Application row and click Administrator.
Now Enter your content Access Account in the first text box and click Add.
Now run the Full Crawl again.
Now compare the Searchable Items
Now Just take a look at Amazing Search Results Page.
Here is Conversation Search
Video test the video results later.
Search Settings at Site Collection Level
For More information and idea about the Vision of Microsoft SharePoint Search please visit the Microsoft SharePoint Team Blog for Series of Articles on SharePoint Search.