The New Testament apocryphal text does not appear to actually have any sermons on the text but ...
This doesn't surprise me at all. The sermons.logos.com website is just doing a regular fuzzy title search using "Acts of Mar Mari". https://sermons.logos.com/search?q=acts+of+mar+mari
I wouldn't expect exact results for this section.
I wouldn't expect any results in this section. Being such a "stupid" routine as to not recognize "no results" is not the quality of application I am paying for. Do I need to put a request on feedbear? And yes, I do appreciate all the work that has gone into bug repair, getting Logos/Verbum closer to the level I expect
Because sermons on sermons.logos.com have not been heavily tagged with LCV topics, switching to an explicit topic search would greatly cut down on the number of valid sermons that would normally be returned (for other topics). We believe that at this point using a "keyword" search gives overall better results despite the false positives that are introduced (such as the ones you point out here).
A feedbear request is probably your best way forward here.