I noticed that searching for a word containing an accented character also yields unaccented results of the same length (searching for parlé yields both parlé and parle). Using quotes doesn't seem to make a difference in that respect.
In a comment to another question, someone mentioned what seems to be a flip side question to my own from the perspective of a different language (Spanish). In so many words it seems at this point the accented form is treated as non accented for search purposes and both accented and non accented forms are returned. I'm not sure what to make out of the situation.
Is that the intended behavior ? In French I don't expect to find parlé if I'm searching for parle, and vice versa. Or maybe it's just me?