Good question! After you added quality content to your site, you optimized it, your site has no place in search engines results pages thanks to spamming.

What can you do? Almost nothing. If you really want to do something, you can report it to search engines. Almost all search engines have “dissatisfied with the results” links on their pages. Of course you have to explain seriously the reason, and keep in mind that they will verify your report. Surely search engines want that info, but this does not mean that they will agree with you.

You have no guarantee that something will change in the results pages, but at least you can say you tried.