No, It's immpossible
You could try visiting https://unlistedvideos.com
there are people manually submitting their findings, and if you really really REALLY want them back on the site,
you could inject them on each channel video's section with the rest, using a blanked item to iterate on each result you scrapped.
can someone make a script where it makes unlisted youtube videos public so that people can be able to see and watch them