Google Instant Search launched back in 2010, the feature would automatically display search results whilst you were in the middle of typing a search.
Now it has been revealed that Google has killed of Instant Search. The news of the change was reported by Search Engine Land.
The reason that Google has decided to kill off Instant Search is to make search faster on mobile, you can see a statement from the company below.
We launched Google Instant back in 2010 with the goal to provide users with the information they need as quickly as possible, even as they typed their searches on desktop devices. Since then, many more of our searches happen on mobile, with very different input and interaction and screen constraints. With this in mind, we have decided to remove Google Instant, so we can focus on ways to make Search even faster and more fluid on all devices.
Instead of seeing instant search results when you are typing a search, you will now only see suggestions, you then have to click on one of those to see the search results.
Source Search Engine Land