Search bar to pull subdomain hosted blogs

We recently migrated our blogs over to a subdomain “blog.domain.com” and are wondering if there is a way for the search widget or built-in search ajax tool in Enfold to pull the blog posts that are on this subdomain plus do a global search of our entire website when someone uses it. In addition, we used to use the “Enfold latest news” widget in the footer to pull recent blogs displaying a featured image. Since our blogs are on the subdomain, this no longer works to pull the latest posts. I noticed the RSS widget – this could work but it doesn’t display a thumbnail image next to the most recent posts from the subdomain.