This can be done. The way I have done it is to create a custom advanced pdf template, combining both the transaction and the saved search, and then in a Suitelet or other script load both the transaction and saved search as data sources for the combined template Renderer.
There may be other ways, such as combining two separately rendered PDF’s using a pdfset, or a User Event script that loads the saved search results into a field during the Print context, though I haven’t used these approaches myself.