add_action( 'ava_after_main_container', 'avia_woocommerce_shop_search', 10 );
function avia_woocommerce_shop_search() {
    $output  = '';
    $output .= '<div class="container">';
    $output .= 'SEARCH SHORTCODE HERE';
    $output .= '</div>';
    echo $output;
}