Narrow down your search
To stop Cortana searching things she doesn’t need to, and speed up the return of those internet results, you can tell her exactly what you’re looking for, which is great when it comes to finding apps and files in particular. So if it’s definitely an app you need, rather than a picture or video, start your search query with ‘app:’. If it’s a setting, type ‘setting:’. For a document... you get the idea. You can force a web search with ‘web:’ too.