Phone search is one of the reason Google built a search engine right inside your homescreen. That address bar on top isn't good just for showing Google search results, you know. It can also search within your files, apps, and contacts for any stuff that you're looking for. However, you may, or may have noticed that as app installations keep piling up, your search queries go farther and farher away from the data that's relevant to you. In this case, you absolutely don't need to uninstall anything. It's a simple matter of checking which apps you want included in Google search, or not. Here's how you do it!
How to choose the apps that Google Now will search and index on Android