Query post types based on taxonomy

query.php

<?php
// The query variable
$queried_term = get_query_var( 'Clients' );

// Return the terms for current post based off the query variable. Make you sanitize your queries!!
$terms = wp_get_post_terms( absint( get_the_ID() ), 'Clients', array( 'fields' => 'all' ) );

// Start the arguments for WP_Query(). We'll define an empty tax_query
// so we hav something to dump our terms into programatically.
$args = array(
	'post_type' => 'post',
	'tax_query' => array()
);

// Loop through all the terms returned for the post and add them to
// the tax_query in the proper format
foreach ( $terms as $term ) {
	$args['tax_query'][] = array(
		'taxonomy' => 'Clients',
		'field' => 'slug',
		'terms' => sanitize_title( $term->slug )
	);
}

// Fetch the posts we need
$client_posts = new WP_Query( $args );

// Start the loop
if ( $client_posts->have_posts() ) : while ( $client_posts->have_posts() ) : $client_posts->the_post();
  // Your Loop Content Here
endwhile;
else :
  // Handle the loop when no posts exist
endif;

// FIN