When does a domain (sales lander) appear in Google's search results?

So most of my domains are not shown if you search them on a browser's search bar because they are just Sedo sale landers, not actually developed websites. But some of them can appear if I type mydomain .com on the search bar (not the address bar). The first result would be: mydomain .com is available for purchase - Sedo .com . How can I achieve that for every domain I own?