Looking at the Guide to Resources on the Book of Ruth I noted a Lori Copeland novel title Ruth listed as suggested resource: The Book of Ruth
Nice find…. :-)
BUT: Your link seems to be a simple search for Ruth, but then builds the results page in your screenshot (and no, the novel is not a fictional etelling of the biblical story, but just a coincidence in the name of the main character ). I can recreate by typing Ruth in the store search bar - which anyone would do who e.g. wanted to buy a novel titles "Ruth".
So I think the shop software is prematurely expecting a search string to be meant as a bible book name when it may be something else.
When I go through the shop menu via Bible Resource Buying Guides, also directly as logos.com/guides https://www.logos.com/guides - I will arrive at a "best resources on Ruth" site which only sells commentaries, courses and bundles, no novels in sight.
I do wish Logos had an easy way to give you the option to EXCLUDE categories from results, both in the store website and also in the program as well.