Test loop query

// WP_Query arguments
$args = array(
	'post_type'              => array( 'post' ),
	'post_status'            => array( 'publish' ),
	'nopaging'               => false,
	'posts_per_page'         => '10',
	'tax_query'              => array(
		'relation' => 'OR',
		array(
			'taxonomy'         => 'post_tag',
			'terms'            => 'pippo',
		),
		array(
			'taxonomy'         => 'post_tag',
			'terms'            => 'franco',
		),
	),
);

// The Query
$query = new WP_Query( $args );