There is no easy way to search for substrings (at least as I know :). The '%keyword%' approach does not work since the structure of the search engine cannot cope with the possibility of a SQL query returning more than one word (an exact match). Cannot remember the details, havent looked at this for some time.
We have, however, created a patched version of the search engine (for eZ publish v. 3.4) that indexes substrings of each word. This works, but your database will grow quite large..
Let me know if you want me to send this patch to you.
Jo H
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Jo Havik / jo.havik at bodonihus.no
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