When dealing with unwanted online content, it is important to distinguish...

https://list-wiki.win/index.php/Why_Do_Some_Pages_Come_Back_After_They_Were_Removed_from_Google%3F

When dealing with unwanted online content, it is important to distinguish between removal and de-indexing. Removal deletes the page entirely, while de-indexing simply instructs Google to drop the link from search results