searching and entity references
I suspect you need to configure your search view modes.

For each of your content types, visit the Magage Display page, eg admin/structure/types/manage/page/display

Unfurl Custom Display Settings, check Search Index and Search Result, and save.

Then for each, configure the search view modes.  Search Index will be used to build up the text that gets indexed.  Add / remove fields as needed.  The Search Result will be used to display the search results.