<div>
  <div id="one">
    <p>hoge1</p>
    <p>huga1</p>
  </div>
  <div id="two">
    <p>hoge2</p>
    <p>huga2</p>
  </div>
</div>

  uu.css("p:nth-last-of-type(1)", uu.id("two")).forEach(function(v) {
    uu.log(v.innerText); // "huga2"
  });
  uu.css("#one > p:nth-last-of-type(1)").forEach(function(v) {
    uu.log(v.innerText); // "huga1"
  });