woocommerce_category_filter

function filter_my_products(){
	//slugs or id.
	$selected_cats = array('shoes,clothes');

	$args = array(
		'post_type' => 'product',
		'posts_per_page' => 7,
		'tax_query' => array(
			array(
				'taxonomy' => 'product_cat',
				'field' => 'slug',
				'terms' => $selected_cats
			),
		)
	);

	// The Query
  	$the_query = new WP_Query( $args );
	// The Loop
	if ( $the_query->have_posts() ) {
		echo '<ul>';
		while ( $the_query->have_posts() ) {
			$the_query->the_post();
			echo '<li>' . get_the_title() . '</li>';
		}
		echo '</ul>';
		/* Restore original Post Data */
		wp_reset_postdata();
	} else {
	// no posts found
	}

}