ขอสอบถามอีกนิดครับ อยากให้แสดงคำว่า ไม่พบข้อมูล ต้องทำยังไงครับ

<meta http-equiv=Content-Type content="text/html; charset=utf-8">

$objConnect = mysql_connect("localhost","root","root") or die("Error Connect to Database");
$objDB = mysql_select_db("mydatabase");
mysql_query("SET NAMES UTF8");

<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }

  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);

  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}

$colname_Recordset1 = "-1";
if (isset($_POST['searchnumbac'])) {
  $colname_Recordset1 = $_POST['searchnumbac'];
}
mysql_select_db($database_wtcmhe, $wtcmhe);
$query_Recordset1 = sprintf("SELECT * FROM bac WHERE numberbac LIKE %s", GetSQLValueString("%" . $colname_Recordset1 . "%", "text"));
$Recordset1 = mysql_query($query_Recordset1, $wtcmhe) or die(mysql_error());
$row_Recordset1 = mysql_fetch_assoc($Recordset1);
$totalRows_Recordset1 = mysql_num_rows($Recordset1);

if($totalRows_Recordset1 <= 0){
  echo "ไม่พบข้อมูล";
}else{
?>

<table width="1024" border="0" align="center" cellpadding="2" cellspacing="2">
  <tr>
    <td width="161" align="left"><h5><a href="BAC.php">กลับหน้าหลัก</a></h5></td>
    <td width="863">&nbsp;</td>
  </tr>
  <tr>
    <td colspan="2"><div class="alert alert-info"><strong>
    <h2>ผลการค้นหา</h2></strong>
   <table width="800" border="0" align="center" cellpadding="0" cellspacing="5">
  <?php do { ?><tr>
    <td width="300" rowspan="7" align="center" valign="top"><img src="imagebac/<?php echo $row_Recordset1['picbac']; ?>" width="150" height="150"></td>
    <td width="75" align="right">รหัสนิสิต :</td>
    <td width="477" align="left">&nbsp;&nbsp;&nbsp;<?php echo $row_Recordset1['numberbac']; ?></td>
    </tr>
  <tr>
    <td align="right">ชื่อ :</td>
    <td align="left">&nbsp;&nbsp;&nbsp;<?php echo $row_Recordset1['namebac']; ?></td>
    </tr>
  <tr>
    <td align="right">นามสกุล :</td>
    <td align="left">&nbsp;&nbsp;&nbsp;<?php echo $row_Recordset1['subnamebac']; ?></td>
    </tr>
  <tr>
    <td align="right">รุ่น :</td>
    <td align="left">&nbsp;&nbsp;&nbsp;<?php echo $row_Recordset1['synbac']; ?></td>
    </tr>
  <tr>
    <td align="right">ศูนย์สอบ :</td>
    <td align="left">&nbsp;&nbsp;&nbsp;<?php echo $row_Recordset1['mapbac']; ?></td>
    </tr>
  <tr>
    <td align="right">เบอร์โทร :</td>
    <td align="left">&nbsp;&nbsp;&nbsp;<?php echo $row_Recordset1['talbac']; ?></td>
    </tr>
  <tr>
    <td align="right">อีเมลล์ :</td>
    <td align="left">&nbsp;&nbsp;&nbsp;<?php echo $row_Recordset1['emailbac']; ?></td>
    </tr>
  <tr>
    <td colspan="3" align="center" valign="top"><hr></td>
    </tr><?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>
   </table>

    </div></td>
  </tr>
</table>

<?php
}
?>