Show All TinyMCE in WordPress add this to functions.php in theme

functions.php

<?php
/**
 * Add the to functions.php
 **/

function enable_more_buttons($buttons) {
    $buttons[] = 'fontselect';
    $buttons[] = 'fontsizeselect';
    $buttons[] = 'styleselect';
    $buttons[] = 'backcolor';
    $buttons[] = 'newdocument';
    $buttons[] = 'cut';
    $buttons[] = 'copy';
    $buttons[] = 'charmap';
    $buttons[] = 'hr';
    $buttons[] = 'visualaid';
    $buttons[] = 'del';
    $buttons[] = 'superscript';
    $buttons[] = 'subscript';
    $buttons[] = 'cleanup';

    return $buttons;
}
add_filter('mce_buttons_3', 'enable_more_buttons');

function myformatTinyMCE( $in ) {
    $in['wordpress_adv_hidden'] = FALSE;

    return $in;
}
add_filter( 'tiny_mce_before_init', 'myformatTinyMCE' );