Not all programs and interventions have been written up and published in the scholarly literature. Instead, some programs may be discussed in reports created by government agencies, health departments, or non-profits. Google is your best bet for finding these reports.
This video will show you how to use advanced Google searching techniques to locate reports on the internet. Note that this video has a global focus, but the same techniques can be applied to find programs in the United States or Indiana.
Google Advanced gives you more control over your search, and can be very helpful in finding grey literature and government documents.
Try these fields:
Region: search for results from a particular country's domain
Domain: search only .gov or .edu
Format: search for PDF only
Experiment with the keyword fields
