How to add shortcode tags in single.php

CMS & WordPress
1

In my theme has one shortcode tags to display tags of post and function to load content post. But in function doesn’t include shortcode tag. Now I want to add it to function but i don’t know how to do it. Hope everyone help me out. Thank in advance.

Shortcode tag

function wwl_post_tags( $atts ) {
    if( $tags = get_the_tag_list( '', ', ' ) ) {

        $defaults = array(
            'before' => __( 'Từ khóa: ', 'icy' ),
            'after'  => '. ',
        );
        $atts = shortcode_atts( $defaults, $atts );

        return sprintf( '%1$s<span class="entry-tags">%2$s</span>%3$s',
            $atts['before'],
            $tags,
            $atts['after']
        );
    }
}
add_shortcode( 'post_tags', 'wwl_post_tags' );

Function to load content post

function wwl_post_content() {
    global $more;

    if ( ! is_single() ) {
        $more = 0;
    }

    do_action( 'wwl_before_post_content' ); // Hook

    if ( ! is_single() && of_get_option('post_content') == 2 || is_search() ) :
    ?>
        <div class="entry-summary">
            <?php wwl_thumbnail(); ?>
            <?php the_excerpt(); ?>
            <div class="clearfix"></div>
        </div><!-- .entry-summary -->
    <?php else : ?>
        <div class="entry-content">
            <?php wwl_thumbnail(); ?>
            <?php the_content( '', false, '' ); ?>
            <?php wp_link_pages( array( 'before' => '<div class="page-links">' . __( 'Pages:', 'icy' ), 'after' => '</div>' ) ); ?>
            <div class="clearfix"></div>
        </div><!-- .entry-content -->
    <?php endif;
}