Hi Axl,
Unfortunately that is still not possible, and I am not sure if it will be ever implemented, due to some inconsistency issues.
The search issue might be only an apostrophe storage problem. If you try S'il Vous Plait (this uses a different apostrophe), it seems to be returning a result.
If that is an issue, then a possible solution would be using this tutorial code, and changing the variables as following:
$characters = "’";
$replace_with = "'";