How do you get Double or Indented Listings in Google SERPs? How do you get two listings from the same website in the top ten results in Google instead of one (in normal view with 10 results).
Generally speaking, this means you have at least two pages with enough link equity to reach the top ten results – two pages very relevant to the search term. In 2016 however it could be a sign of Google testing different sets of results by for instance merging two indexes where a website ranks differently in both.
You can achieve this with relevant pages, good internal structure and of course links from other websites. It’s far easier to achieve in less competitive verticals but in the end is does come down in many cases to domain authority and high relevance for a particular keyphrase.