Add one more line in this code,
<form id="cse-search-box" action="/pages/other/search_results.html">
<input type="hidden" name="cx" value="xxxxxxxxxxxxxx" />
<input type="hidden" name="cof" value="FORID:11" />
<input type="hidden" name="ie" value="UTF-8" />
<input type="hidden" name="sort" value="date:d" />
name="sort" & value="date:d"
It works for me as a descending order view.