A quick note: Ok.ru (Odnoklassniki) is a social network that hosts user-uploaded videos, including many older films. While links there can change or be taken down due to copyright, I can guide you on how to search for it effectively.
It looks like you're looking for the 1980 Swedish children's film (English title: Children's Island ), possibly to watch on ok.ru. barnens ö (1980) ok.ru