list tax
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => 'category', 'terms' => '19', 'field' => 'term_id', 'operator' => 'AND', 'include_children' => true, ), array( 'taxonomy' => 'content_type', 'terms' => '104', 'field' => 'term_id', 'operator' => 'AND', ), );