According to Conductor they constantly see search results similar to this with results related to celebrities and brands that usually have larger Twitter followings and also were active on the social network recently.
At this moment it is not very easy to replicate such results here with every brand or celebrities in India, but you can replicate the results using the same keywords used in the snapshot above. With a consistent company like Google, you must be sure to see the results for most of the searches in the near future.
Google spokesperson further confirmed that Google was experimenting with this new feature of displaying Twitter results in desktop searches since middle of July. Now they announced this feature officially on Twitter. They have also posted an update on the official Google blog mentioning that they have indeed extended the service by displaying content from Twitter i.e. Tweets in the desktop search results from Google.