I have been struggling to find a solution to Sharepoint Search Results. My Farm has 2 Servers and DB and Web/APP. I create a content source for FileShare and was able to successfully crawl. I can see all the contents of the File Share in the Index. When i attempt to search, search results are not display anything from the Fileshare. Search Service account has permission to the File Share. 

Sharepoint Server is running in Windows Server 2012 and SQL Server is 2012 R2 if that matters.

Did you select "Crawl the folder and all subfolders of each start address" when you create the Test Share content source

did u add a new  crawl rule to the file share path 

file://server/folder/*

I did try that but didn't work, still not returning any results.

You're doubly sure on the Service application having permissions?

Yes.  I created another share and setup a new Farm and started my crawl, same issue. Do i have to do anything else for Search Query or Result Source, right now i have one site collection and trying to use the default search settings to get the results. 

Have you given the service account the "Manage auditing and security log" user right as well as read access to the share?

http://support.microsoft.com/kb/2817731