Social Search Engine finds social information from multiple social networking sites including Facebook, Twitter, Google Plus, Blogspot, LinkedIn, YouTube and many more at same time. It's based Google Custom Engine and saves your lots of times as you don't have to search each social site individually.
Through this real-time online service, you can monitor your sites and brands, find live stream links, find interesting content, and many more.
Site URL: www.socialsearchengine.org.
The below screenshot shows the search results of "iPhone 6s" from social network sites.