They used to offer that functionality but removed it years ago. I've been using this userscript since then. https://greasyfork.org/en/scripts/1682-google-hit-h

They used to offer that functionality but removed it years ago. I've been using this userscript since then. https://greasyfork.org/en/scripts/1682-google-hit-hider-by-domain-search-filter-block-sites https://greasyfork.org/en/scripts/1682-google-hit-hider-by-d... It might be called Google Hit Hider by Domain but the author has expanded it to cover most major search engines over the years.