Unused data is being pulled over a socket
FULLTEXT indexes
the LIKE clause
Study and Learn Database Optimization
Failing that use the following tips...
MySQL supports the 'LIMIT' clause which can be used
to lower the returned result set to a specified number
Never use LIKE or a FULLTEXT index to do complex
searches. Use keywords and an alternative ranking system
The only thing worse than using a LIKE clause, is building
your own LIKE clause in PHP.