Google Book Search behaves strangely when you use search terms that contain characters with diacritics (OK. I’m showing off. I mean accents)
It would be nice to report this but Google shares something in common with that other megacorp in that it doesn’t make it easy to report a bug.
So if you’re searching for a phrase with accents try it with and without to make sure you don’t miss relevant results. 
Related posts:
