Are you specifically selecting that search option after it fails to install a driver? If you're just uninstalling the vendor provided drivers, removing the vendor drivers from disk, and redetecting the hardware then Windows might just be pulling a WHQL driver off disk that it already has.

Most Windows installs come with a cache of WHQL drivers for common devices, companies like Synaptics, Realtek, etc will provide a single driver that supports most of their devices. In rare cases where you have a device with limited storage (e.g. a cheap tablet) then it might not have those drivers, but that's not the norm.