Some ricoblog readers may be interested in this post I wrote for the Logos Bible Software Blog.
It is a decent example of some of the benefits of searching the Greek New Testament by taking syntactic criteria (clauses, phrases, and relationships between words, phrases and clause components; along with morphological criteria, proximity and agreement) into account in comparison with similar searching that only takes morphological criteria (parsing/declension and lexical forms) along with proximity and agreement into account.
Phew. That's a lot of fancy words. Just read the post and you'll see what I mean.