We already know that Microsoft already provided search facility through quick launch bar in previous versions of Visual Studio. Microsoft has improved the search experience in Visual Studio 2019 to get more accurate results and more quickly.
To have the search bar in visual studio, either select Ctrl+Q or select search box as shown below.
If you want to add any project, for example, to add Class Library, search for Class Library and it displays all available templates like below.
You can search for any themes and other settings also.
Microsoft Visual Studio 2019 also included fuzzy search logic. That means when you enter a type (spelling mistake) also, VS 2019 provides the proper results.
Here we entered thmese instead of themes, still Visual Studio 2019 shown results for themes.
Even we can search for any missing component and can install it through quick search bar.