If you have a Cloud Environment, you will have the Data Export Service enabled (DES). This will allow you to see the activity of a document, even when it has been marked as a minor Edit. This document provides details on using the DES https://community.jivesoftware.com/docs/DOC-99916#jive_content_id_How_Do_I_Get_Access_to_the_DES
For your particular scenario, you can filter by the action ACTIVITY_UPDATE_DOCUMENT to get a list of all the edits made on a specific document.
Hope this helps.