As you know, many of us use
archive.org to OCR their books:
<https://en.wikisource.org/wiki/Help:DjVu_files#The_Internet_Archive>
For a while, they've been stuck with FineReader 8.0. I've just noticed
the last OCR processes use 9.0, which has 5 more languages and 2 more
dictionaries:
http://www.abbyy.com/support/finereader_90_ts/RecognitionLanguages/
http://www.abbyy.com/support/finereader_80_ts/RecognitionLanguages/
I think it's worth re-doing OCR on any
archive.org DjVu you're using
(and you definitely must do so if it's one of those languages). I'm a
(limited) admin there, so feel free to give me on my talk lists of items
where to update OCR:
https://wikisource.org/wiki/User_talk:Nemo_bis
Nemo