<?php $cat_posts = new WP_Query($query_string."&meta_key=wpcf-data-nuo&orderby=meta_value&order=ASC");
                    //echo $GLOBALS['wp_query']->request;
                    /*$args = array(
                       'post_type' => 'post',
                       'meta_key' => 'wpcf-data-nuo',
                       'orderby' => 'meta_value',
                       'order' => 'ASC',
                    );
                    $cat_posts = new WP_Query($args);*/
                        if ($cat_posts->have_posts()):while($cat_posts->have_posts()):$cat_posts->the_post();
                    ?>

...here goes items....

<?php endwhile; else: ?>
<p class="error"><?php _e('Sorry, no posts matched your criteria.'); ?></p>
<?php endif; ?>