Child Theme: Edit files in a subfolder of the parent theme – how?

Hey guys,
I have a question and I hope you can understand what I mean.

I already have a working child theme and now I want to edit some files which are in subfolders of the parent theme. When I am editing this files and create a new subfolder in my child theme like this one in the parent theme the changes dont appear in the website.

What I have to do? My functions.php looks like the following right now:

<?php function theme_enqueue_styles(){
wp_deregister_style( 'font-awesome');
wp_register_style('font-awesome', get_template_directory_uri(). '/css/font-awesome.min.css');
wp_enqueue_style('font-awesome', get_template_directory_uri(). '/css/font-awesome.min.css');
wp_deregister_style( 'bootstrap.css');
wp_register_style('bootstrap.css', get_template_directory_uri(). '/css/bootstrap.min.css');
wp_enqueue_style('bootstrap.css', get_template_directory_uri(). '/css/bootstrap.min.css');
wp_deregister_style( 'cda-style');
wp_register_style('cda-style', get_template_directory_uri(). '/style.css');
wp_enqueue_style('cda-style', get_template_directory_uri(). '/style.css');
wp_enqueue_style( 'childtheme-style', get_stylesheet_directory_uri().'/style.css', array('cda-style') );
}
add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );?>

Yours sincerely
Sandro