//Where you have this:
<div class="post_excerpt">
    <?php mysite_post_content( array( 'blog_layout' => $layout['blog_layout'] ) ); ?>
</div>

//Replace with this:
<div class="post_excerpt">
    <?php if (is_search()) { echo "<h1>"; the_title(); echo "</h1>"; } ?>
    <?php mysite_post_content( array( 'blog_layout' => $layout['blog_layout'] ) ); ?>
</div>