Any one have confirmation about tech support seo keywords banlist?

Hi, anyone has observed that Google has banned the tech support keywords like Microsoft support number, Apple support number. Before if we search with these keywords we will get hell lot of pages with so many independent support numbers like www.yahooemailsupport.net . Now Google has only 2 pages with most of the branded keywords, they are showing only offical websites for those keywords. Any one have some idea or a solution about this.

Thanks