Me ayudan con este error de PHP

[marcofbb]

Código PHP:

$conecta = mysql_connect("localhost", "root", "");
mysql_select_db("ehms", $conecta);
$sql= mysql_query("SELECT * from clientes where Cue like '%$cue%' and Nom like '%$nom%' and Dir like '%$dir%' and Tel like '%$tel%'", $conecta);
 
echo "<table border = '1' align= 'center'>";
echo "<tr>";
echo "<td> Cuenta </td>";
echo "<td> Nombre </td>";
echo "<td> Direccion </td>";
echo "<td> Telefono </td>";
echo "</tr>";   
while ($row = mysql_fetch_row($sql))
{ 
echo "<tr>";
echo "<td>$row[0]</td>";
echo "<td>$row[1]</td>";
echo "<td>$row[2]</td>";
echo "<td>$row[3]</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($conecta);
 

Hay resultado en la base de datos ?

Intenta cambiar

$sql= mysql_query("SELECT * from clientes where Cue like '%$cue%' and Nom like '%$nom%' and Dir like '%$dir%' and Tel like '%$tel%'", $conecta);

por

$sql= mysql_query("SELECT * from clientes where Cue like '%$cue%' OR Nom like '%$nom%' OR Dir like '%$dir%' OR Tel like '%$tel%'", $conecta);