Autocomplete Search with jQuery – provide real time search term suggestions from backend database –
http://www.wowww.nl/2014/02/01/jquery-autocomplete-tutorial-php-mysql/
http://api.jqueryui.com/autocomplete/
http://www.bewebdeveloper.com/tutorial-about-autocomplete-using-php-mysql-and-jquery
http://www.jqueryautocomplete.com/jquery-autocomplete-php-mysql-json-example.html