public static function findBussiness()
 {
     //create string sql
     //if(isset($_REQUEST['btnSearch']))
     //{
     $strLink = "dichvu.php?";
     $strSQL = "select * from ";
     $strTable = "dichvu";
     $strWhere = " where status>0  ";
     if (isset($_REQUEST['cbbLoaidv']) && $_REQUEST['cbbLoaidv'] != -1) {
         $strLink .= "cbbLoaidv=" . $_REQUEST['cbbLoaidv'] . "&";
         $strWhere .= " and dichvu.loaidv=" . $_REQUEST['cbbLoaidv'];
     }
     if (isset($_REQUEST['cbbLoaiBDS']) && $_REQUEST['cbbLoaiBDS'] != -1) {
         $strLink .= "cbbLoaiBDS=" . $_REQUEST['cbbLoaiBDS'] . "&";
         $strWhere .= " and dichvu.loainha=" . $_REQUEST['cbbLoaiBDS'];
     }
     if (isset($_REQUEST['cbbTinh']) && $_REQUEST['cbbTinh'] != -1) {
         $strLink .= "cbbTinh=" . $_REQUEST['cbbTinh'] . "&";
         $strWhere .= " and dichvu.tinh=" . $_REQUEST['cbbTinh'];
     }
     if (isset($_REQUEST['cbbQuanHuyen']) && $_REQUEST['cbbQuanHuyen'] != -1) {
         $strLink .= "cbbQuanHuyen=" . $_REQUEST['cbbQuanHuyen'] . "&";
         $strWhere .= " and dichvu.quan=" . $_REQUEST['cbbQuanHuyen'];
     }
     $strSQL .= $strTable . $strWhere . " order by status desc";
     return BusinessProcessor::findBusiness($strLink, $strSQL);
     //}
     //return null;
 }