How to filter WordPress search, excluding post in some custom taxonomies?

May 25, 2022 by Tarik Billa

Try

$tax_query = array(
    'relation' => 'AND',
     array(
        'taxonomy' => 'marque',
        'terms' => array( 70, 67 ),
        'field' => 'term_id',
        'operator' => 'NOT IN'
      )
 );
 //turn it into a WP_Tax_Query object...
$tax_query = new WP_TaxQuery($tax_query);

$query->set("tax_query", $tax_query);