The Grammatical Relationships section of the Bible Word Study does not always work for me. For example if I do a word study from Psalm 89:8 in the ESV on the word "faithfulness" (lemma אֱמוּנָה) the tool works properly. However, doing it on the word "hosts" (lemma צָבָא) in the same passage produces "no results".
The tool appears to use Anderson-Forbes Hebrew Grammatical Relationships. The results are the same using "by related word" or "verses" in the settings.
I own the Logos 4 and 5 cross-grades, which according to the wiki contains Grammatical Relationships (http://wiki.logos.com/Upgrade_or_Crossgrade).
In addition, I have already reindexed.
Thanks for the help!