autocomplete search-box to echo another box with data from database

I have created an auto-complete search-box, where by once I write a word, words are listed down, and I choose what I want, and it displays the choice in my input text-box. What I want is that once I search for the item, the data from the database should appear in another box. Here is my code..

$(document).ready(function()
$("#search-box").keyup(function()
$.ajax(
type: "POST",
url: "readDesease.php",
data:'keyword='+$(this).val(),
beforeSend: function()
$("#search-box").css("background","#FFF url(LoaderIcon.gif) no-repeat 165px");
,
success: function(data)
$("#suggesstion-box").show();
$("#suggesstion-box").html(data);
$("#search-box").css("background","#FFF");

);
);
);

function selectDiagnosis(val)
$("#search-box").val(val);
$("#suggesstion-box").hide();


<tr>
<td>Diagnosis-1</td>
<td>
<input type="text" id="search-box" name="search-box" placeholder="Desease Name" required="required" />
<div id="suggesstion-box"></div>

<?php
$conn = new mysqli("localhost", "root", "", "coding") or die(mysqli_error());
$sa=$_POST['search-box'];
$query = $conn->query("SELECT * FROM Diagnosis_code WHERE col2 = $sa ") or die(mysqli_error());
$fetch = $query->fetch_array();
?>

<td>
<input type="text" id="search-block" name="search-block" placeholder="block Name" required="required" value=" <?php echo $fetch ?> " />
</td>
</tr>

<!--this is readeDesease.php-->
<?php
require_once("dbcontroller.php");
$db_handle = new DBController();
if(!empty($_POST["keyword"]))
$query ="SELECT * FROM diagnosis_code WHERE col2 like '%" . $_POST["keyword"] . "%' OR col1 like '%" . $_POST["keyword"] . "%' ORDER BY col2 LIMIT 0,50";
$result = $db_handle->runQuery($query);
if(!empty($result))
?>
<ul id="diagnosis-list">
<?php
foreach($result as $diagnosis)
?>
<li onClick="selectDiagnosis('<?php echo $diagnosis["col1"]; ?>');"><?php echo $diagnosis["col2"]."<strong>".$diagnosis["col1"]."</strong>"; ?></li>
<?php ?>
</ul>
<?php ?>

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