arama sonucunun döndüğü sayfada resmin gözükmesini istediğiniz yere aşağıdaki kodları yapıştırın

<?php if(has_post_thumbnail()):?>
<!-- blog image-->
<?php
if(!get_option('rttheme_blog_resize'))://RT-Theme resize option is enabled

//get the image url
$image_id = get_post_thumbnail_id();
$image_url = wp_get_attachment_image_src($image_id,'large', true);
$image_url = $image_url[0];

?>
<a href="<?php echo $image_url;?>" title="<?php the_title(); ?>" rel="prettyPhoto[rt_theme_blog]" class="imgeffect plus"><img src="<?php bloginfo('template_directory'); ?>/timthumb.php?src=<?php echo $image_url?>&amp;w=680&amp;h=130&amp;zc=1" alt="" class="aligncenter" /></a>
<?php else://use the post thumbnail ?>
<?php
$default_attr = array('class' => "attachment-$size aligncenter post_image preload");
echo get_the_post_thumbnail($post->ID,array(680, 1000),$default_attr);
?>
<?php endif;?>
<!-- / blog image -->
<?php endif;?>