$tax_query = array( 'relation' => 'AND', array( 'taxonomy' => 'animal', 'terms' => 'panda', 'field' => 'slug', ), array( 'relation' => 'OR', array( 'taxonomy' => 'food', 'terms' => 'sasa', 'field' => 'slug', ), array( 'taxonomy' => 'zoo', 'terms' => 'ueno', 'field' => 'slug', ), ), );