We know this a very common question which as resolutions already given like below. However these are not working for us;
We are banging our heads for hours now.
Content gets crawled correctly. No errors However Search just doesn't show any result. Not even for "*"
We have Followed the below MSDN link to configure Search Service Application
Then confirmed the Crawl URL is same as the URL of Application in Alternate Access Mapping for Default Zone
Kindly let know are we missing any thing. Kindly let know if any further details required.