Acronyms with Sphinx search engine

how can i index acronyms like 'm.i.a.'? when i search for 'mia', i get results for 'mia' and not 'm.i.a.'. when i search for 'm.i.a.', i get nothin开发者_开发问答g at all.

edit:

solution looks roughly like: ignore_chars = -, .

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you could add '.' to your ignored character list: http://www.sphinxsearch.com/docs/current.html#conf-ignore-chars

or you could maybe add m.i.a. > mia as a wordform: http://www.sphinxsearch.com/docs/current.html#conf-wordforms