function re_rewrite_rules() {
    global $wp_rewrite;
    $wp_rewrite->author_base        = 'yazarlar';
    $wp_rewrite->search_base        = 'arama-sonuclari';
    $wp_rewrite->comments_base      = 'yorumlar';
    $wp_rewrite->pagination_base    = 'sayfa';
    $wp_rewrite->flush_rules();
}
add_action('init', 're_rewrite_rules');