To remove a page from Google search results, use the "noindex" tag in your...

https://wiki-cable.win/index.php/Why_Did_My_Page_Drop_and_Then_Reappear_in_Google_Search%3F

To remove a page from Google search results, use the "noindex" tag in your site’s HTML to tell crawlers to stop indexing that specific URL. If the page is already gone, return a 404 or 410 status code