The reason for this is, that this options can heavily decrease performance. But you can simply turn the options on again:
4. Find "Option Name=AllowOpContains" and change the Value to "True"
<Name=AllowOpContains" Value="False"> –> Contains option turned off
<Name=AllowOpContains" Value="True"> –> Contains option turned on
If you cannot find the entry, create it.
5. Click OK and publish the page.