tax_query
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => '$taxonomy1', 'terms' => '$term_slugs1', 'field' => 'slug', ), array( 'taxonomy' => '$taxonomy2', 'terms' => '$term_slugs2', 'field' => 'slug', ), );
$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => '$taxonomy1', 'terms' => '$term_slugs1', 'field' => 'slug', ), array( 'taxonomy' => '$taxonomy2', 'terms' => '$term_slugs2', 'field' => 'slug', ), );