您可以将隐藏字段添加到搜索表单中，并基于此添加其他模板：

<form role="search" method="get" id="searchsupport" action="/">
    <label class="screen-reader-text" for="s">Search for:</label>
    <input type="text" onfocus="if (this.value == \'Search\')  
    {this.value = \'\';}" onblur="if (this.value == \'\')  
    {this.value = \'search\';}" id="s" name="s" value="search" class="search-form round"> 
    <input type="hidden" id="searchsubmit"> 

    <!-- this is the magic field --->
    <input type="hidden" name="custom_search" value="1"> 

    <input type=\'hidden\' name=\'post_type\' value=\'software, documents\' />
</form>

if (isset($_GET[\'custom_search\']) && $_GET[\'custom_search\'] == 1){
   include(\'custom_search.php\'); // change it to whatever template file you would like to use
   break;
}