When going through the "advanced" upgrade install of Win10, there was an option to NOT send Microsoft information about what you search for in the bar. It's set to send by default, but can be disabled.
I have everything disabled in privacy settings. Doesn't help. Check for yourself if you like.
It's important to note that this is _not_ info that you search for. No search query was included. Just a lot of identifying information about my machine.