Tags, use both union and intersection at the same time
You can achieve this with a tax_query, though by default not via any sort of URL manipulation: $args = array( ‘post_type’ => ‘post’, ‘tax_query’ => array( ‘relation’ => ‘AND’, array( ‘taxonomy’ => ‘post_tag’, ‘field’ => ‘slug’, ‘terms’ => array( ‘biology’ ) ), array( ‘taxonomy’ => ‘post_tag’, ‘field’ => ‘slug’, ‘terms’ => array( ‘male’, ‘female’ ), … Read more