I have used full text search mysql. My code is select * from uh_property WHERE match(fieldname) against(\'serach_word\')
Now when i type word of three character
Please see Fine-Tuning MySQL Full-Text Search. You first need to change ft_min_word_len (or innodb_ft_min_token_size for InnoDB tables) and then rebuild the fulltext search indexes.
ft_min_word_len
innodb_ft_min_token_size