Care to explain? I have been using Thunderbird for 3-4 years at this point. I have indexing on and that sort of stuff. But searches that include the body text

Care to explain? I have been using Thunderbird for 3-4 years at this point. I have indexing on and that sort of stuff. But searches that include the body text is remarkably slow. It does not seem to search inside attachments as well. It would be awesome if I could fix these.