Similar Apps Listing

If you search on google for: “App Name” you can see which apps link to your app.
How can it be that our app which has 500.000 Downloads is listed nowhere? What can we do against this? Can your apps be found?

What is the reason for searching app in Google, while most of the users search in Play Store?

Because this is the way to only give search results from Play Store only.

I have searched and I found it in 2 number item of the result

I found mine in the first result on high keyword ! wow