You've got a pretty long row to hoe in front of you. I'm guessing that you're working on the referrer logs for your website, and want to see what terms people used to find your site.

I did something like this (and the results are pretty interesting, scary and funny (and definitely R-rated) ) but I had to go via empirical examination of the log files.

Try to narrow down what it is you actually want to know, and try to get the handful of engines that give you 90% of what it is you're looking for.

xoxo,
Andy
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<megaphone> Throw down the gun and tiara and come out of the float! </megaphone>

xoxo,
Andy
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<megaphone> Throw down the gun and tiara and come out of the float! </megaphone>