searchform.php only returns results from posts' "title"

I’m somewhat of a beginner with PHP, so please bear with me…

I am using the Job Board theme by Templatic for the website https://www.helpershand.com. My problem lies in the file ‘searchform.php’. When I search my site, it only queries results by the title of the post and nothing else. I want to be able to search, say “Omaha” and it finds posts with “Omaha” as the location.

Does this make sense? Again, I know that I have to do this in searchform.php but I just don’t know what line of code will make this work. Here is my current searchform.php code:

<?php
if($_GET['s'])
{
	$s = $_GET['s'];
}else
{
	$s = FIND_A_JOB_TEXT;
}

?>
<div id="search">
 <form method="get" id="searchform" action="">
<input type="text" value="<?php echo $s;?>" name="s" class="s" onfocus="if (this.value == '<?php echo FIND_A_JOB_TEXT;?>') {this.value = '';}" onblur="if (this.value == '') {this.value = '<?php echo FIND_A_JOB_TEXT;?>';}"/>
<input type="image" src="<?php bloginfo('template_url'); ?>/images/none.png" alt="" class="sgo"  />
</form>
<a href="<?php echo get_option('siteurl');?>/?page=advance_search" class="advance_search"><?php _e('Advanced Search')?></a>
</div>