[PHP/MySQL] Problem med sökfunktion, visar inget vid fler än ett resultat

if (isset($_POST['searchfield'])) {
					
	$search = clean($_POST['searchfield']);
	$mysql_search = mysql_query("SELECT *,
		MATCH(title, maintxt, tags) AGAINST('$search') AS score
		FROM articles
		WHERE MATCH(title, maintxt, tags) AGAINST('$search')
		ORDER BY score DESC ");
}

<?php
while ($rows = mysql_fetch_array($mysql_search)) {

    if(strlen($rows['maintxt']) > 500) {
        $rows['maintxt'] = substr($rows['maintxt'], 0, strpos($rows['maintxt'], ' ', 380)) . '...';
    }

	?>
	<div class="post">
		<h2><?php echo $rows['title']; ?></h2>
		<span class="date"><?php echo $rows['date_time'];?></span><br>
		<div class="thumb-container">
		   <img src="<?php echo $rows['img_default']; ?>" name="mypic" class="thumb" alt="" border="0">
		</div>
		<p class="maintxt">
			<?php echo $rows['maintxt']; ?>
			<br>
			<br><a href="index.php?s=viewarticle&id=<?php echo $rows['id']; ?>">Read more</a>
		</p>
    </div>
<?php
                                    
   }
?>