Any way to insert text on page from a query results?

Ok, but I was afraid it’s not really a good solution. Works, though.

First, I rewrote the query in order to get pretty permalinks:

 /*Añadido: Reescribir URL query: "?pa_dispositivo=nombre&pa_marca=nombre"*/
function custom_rewrite( $wp_rewrite ) {

    $feed_rules = array(
        'tipo/(.+)/marca/(.+)'    =>  'index.php?pa_dispositivo='. $wp_rewrite->preg_index(1).'&pa_marca=". $wp_rewrite->preg_index(2)
        //"(.+)'    =>  'index.php?pa_marca=". $wp_rewrite->preg_index(1)
        //"(.+)'    =>  'index.php?pa_dispositivo='. $wp_rewrite->preg_index(1)
    );

    $wp_rewrite->rules = $feed_rules + $wp_rewrite->rules;
}
// refresh/flush permalinks in the dashboard if this is changed in any way
add_filter( 'generate_rewrite_rules', 'custom_rewrite' );

/*Fin Añadido*/

This gives me something like site.com/name/tax1/name2/tax2.

Then, I modified the file that creates the divs contaning the query results. If the URL is “this” do echo “that”:

$uri = $_SERVER['REQUEST_URI']; //Sacamos la URL y los fragmentos de la URL
    $pieces = explode("https://wordpress.stackexchange.com/", $uri);
    $uri_prov= $pieces[2];  

    echo "<div class="breadcrumbsBusqueda">";

    switch ($uri) {

        case "/provincia/".$uri_prov."https://wordpress.stackexchange.com/":
        echo "<a href="https://wordpress.stackexchange.com/">Inicio</a> › ".$uri_prov."</div>TEXT<div class="area_with_sidebar area_left">";
        break;

        default:        
        echo '<a href="https://wordpress.stackexchange.com/">Inicio</a> › Esto es lo que hemos encontrado para tu búsqueda: '.get_search_query().'</div><div class="area_with_sidebar area_left">'



        //add as many cases as you need