WordPress customizing search

Hi
I am creating a custom WP theme, I have an advanced search feature whose code is below:
******************* start of code **********************
<form role="search" method="get" id="searchform" class="searchform sidebar-search-form" action="<?php echo home_url('/'); ?>">
<?php wp_dropdown_categories('show_count=1&hierarchical=1&depth=2&show_option_all=Any Make or Model'); ?>
<select id="exterior_color" name="exterior_color" size="" title="Exterior Color">
<option selected disabled…
WordPress customizing search

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