get data from mysql database without refreshing whole page and search like facebook

using this tutorial you can understand that how to get data from mysql database without refreshing whole page and search like facebook you can exactly get data like facebook search from mysql and also i will show you Ajax Search Box in PHP and MySQL,get data from mysql database without refreshing whole page and search like facebook, Creating Autocomplete or Search Suggestion Functionality with PHP,How to create your own search engine with PHP and MySQL,Creating a Code Search Engine with PHP and MySQL,Autocomplete textbox using jQuery, PHP and MySQL