app/code/core/Mage/Adminhtml/Model/Search/Catalog.php

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<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @copyright  Copyright (c) 2008 Irubin Consulting Inc. DBA Varien (http://www.varien.com)
 * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


class Mage_Adminhtml_Model_Search_Catalog extends Varien_Object
{
    public function load()
    {
        $arr = array();

        if (!$this->hasStart() || !$this->hasLimit() || !$this->hasQuery()) {
            $this->setResults($arr);
            return $this;
        }

        $collection = Mage::helper('catalogSearch')->getQuery()->getResultCollection()
            ->addAttributeToSelect('name')
            ->addAttributeToSelect('description')
            ->addSearchFilter($this->getQuery())
            ->setCurPage($this->getStart())
            ->setPageSize($this->getLimit())
            ->load();

        foreach ($collection as $product) {
            $arr[] = array(
                'id'            => 'product/1/'.$product->getId(),
                'type'          => 'Product',
                'name'          => $product->getName(),
                'description'   => Mage::helper('core/string')->substr($product->getDescription(), 0, 50),
                'url'           => Mage::helper('adminhtml')->getUrl('*/catalog_product/edit', array('id'=>$product->getId())),
            );
        }

        $this->setResults($arr);

        return $this;
    }
}

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