I've got a question that developed over the course of another thread. As far as I can tell, the default Bible reference search syntax is returning only a fraction of the actual hits! Yikes.
Here's how I got to my conclusion. Please prove me wrong!
In the above-mentioned thread, one of the searches I performed was <Bible = Luke 2:7> in the Revised Common Lectionary, which surprised me by not yielding any results. This is the syntax specified in the Wiki, and a variation on it (<BibleNRSV = Luke 2:7>) is the syntax generated by Logos itself when searching from within a Bible using the context menu. Both the <Bible = > and <BibleVERSION = > queries produce identical results.
Graham Criddle used a different syntax: <Luke 2:7> in the Revised Common Lectionary, which yielded the appropriate hits.
This was odd, so I tried expanding the search to my entire library, using the same queries. My results are below - for your convenience, here are links to the queries so you can test them out yourself:

I'm rather concerned by these results! It appears that both the right-click search from within a Bible and a search done with the preferred syntax, are missing hundreds of results, including ones in content I have generated myself.
Now, I admit that I didn't check all the results in the final query to make sure the additional hits were valid - I don't have quite that much time on my hands to kill.
But the single hit found in my own content is legit... and it was missed by the other two queries.
Can anyone confirm and/or explain this behavior?