Full-text search engine for CJK?

Hi all!

Does anyone know a working full-text search engine for CJK text?

I have tried several but all of them seem to suck:

- MySQL full-text: cannot understand chinese "words" at all

- Sphinx: there is manual for using it CJK, but search result is
incorrect...

- Zend Framewoprk Lucene: I have used .net lucene before, but I gave
up on zend's since it needs to load the index every time you make a
search - and that'd be painfully slow; I haven't tried to solve the
issue, though it may be possible to put the loaded index data into
cache or somewhere...


Any suggestions?