I am using google custom search for my site, I want google to provide at most 2 searches from a site. I am not sure whether it is possible or not but it seems there is no such option on google CSE.

For example my CSE has 10 listed sites, what I want is that whenever user makes a search then search results should show at most two links from a site. In general CSE is resulting multiple results from one site only and those comes on page 1, if it is at most 2 from a site then user has better chance to have links from other sites too.