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// Use type ahead search for fast search results

// Put below mentioned library in your head section

<!--<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="http://cdn.jsdelivr.net/typeahead.js/0.9.3/typeahead.min.js"></script>-->    

// Use below mention code in you catalogsearch/results.mini.phtml file

<script>
var gp = $.noConflict();
gp(document).ready(function(){
    gp("#search").typeahead({
        name : 'username',
        remote: {
            url : 'http://zapreaction.info/projects/vendors/zaplogin/search?query=%QUERY'
        }
        
    });
});
</script>

<form id="search_mini_form" action="<?php echo $catalogSearchHelper->getResultUrl() ?>" method="get">
    <div class="search-box">
        <label for="search"><?php echo $this->__('Categories:') ?></label>
        <input id="search" type="text" name="<?php echo $catalogSearchHelper->getQueryParamName() ?>" value="<?php echo $catalogSearchHelper->getEscapedQueryText() ?>" class="input-text serch" maxlength="<?php echo $catalogSearchHelper->getMaxQueryLength();?>" placeholder="Search entire store here" />
        <button type="submit" title="<?php echo $this->__('Search') ?>" class="button search-icon"><span><span><?php //echo $this->__('Search') ?></span></span></button>
        <div id="search_autocomplete" class="search-autocomplete"></div>
        
        <script type="text/javascript">
        //<![CDATA[
            var searchForm = new Varien.searchForm('search_mini_form', 'search', '<?php echo $this->__('Search entire store here...') ?>');
            searchForm.initAutocomplete('<?php echo $catalogSearchHelper->getSuggestUrl() ?>', 'search_autocomplete');
        //]]>
        </script>
    </div>
    <div class="myrspns"></div>
</form>

<?php
// You can create you module and put below code on your module controller's file

class Zap_LoginWorld_SearchController extends Mage_Core_Controller_Front_Action{

     public function indexAction(){
        $searchData = $_GET['query'];
	        require_once 'app/Mage.php';
	        $collection = Mage::getModel('catalog/product')->getCollection();
	        $collection->addAttributeToSelect(array('name', 'price'));
	        $collection->addAttributeToFilter('name', array('like' => '% '.$searchData.'%'));	        
	      
	        
			foreach ($collection as $product) { 
	        		$res[] = $product->getName();
		       	}
		       echo json_encode($res);
	       
	}
}


?>