limit results by post(s)?

Hi I’m using Woocommerce and Woothemes Sensei (Course management system) and I have individual lecture pages (i.e. posts) that have a large number of comments per lecture. I want to provide search functionality for my users where they can only search within the comments. Obviously this means people registered in other lectures should not be able to see comments from lectures they are not enrolled in in the search.
Is this possible to do?

https://www.ads-software.com/plugins/wpsolr-search-engine/