I was never sure exactly what to call them – when you are viewing a set of search results in Google and there’ll be a homepage result and then a second result from the same site that is then indented underneath. Here’s how to get it and ‘double your real estate’:
Do a search for "your keyword phrase" and find the second page on your site that is ranking for this term. Hopefully it is somewhere within striking range, let’s define that as the secondary page ranking currently in the top 50. Build external links directly to this secondary ranking page using mainly the link text "your keyword phrase" that you are trying to rank for.