You can add padding to your td with CSS:
td {
padding-right: 30px;
}
<table>
<tr>
<td><a href="#">Hello</a></td>
<td>Goodbye</td>
</tr>
<tr>
<td><a href="#">Hola</a></td>
<td>Adios</td>
</tr>
</table>
or give them a fixed width:
td {
min-width: 200px;
}
<table>
<tr>
<td><a href="#">Hello</a></td>
<td>Goodbye</td>
</tr>
<tr>
<td><a href="#">Hola</a></td>
<td>Adios</td>
</tr>
</table>