Search Engine Land reports that Twitter and Bing have renewed their deal. The deal enables Microsoft to run current Twitter results on its search engine. You can get the results on Bing Social. The latest Twitter and Facebook results are searchable. Bing also lists some of the hottest social topics.
Google's Realtime Search was a wonderful search tool, unfortunately Google and Twitter do not currently have a tweets deal. Google's Realtime search is currently disabled, but Google is expected to bring it back using Google+ updates. It is not clear if tweets will ever return to Google's Realtime search. Google told Search Engine Watch, "We’ve temporarily disabled google.com/realtime. We’re exploring how to incorporate the Google+ project into this functionality going forward, so stay tuned."