Isn't it easier not to use that kind of characters? You should test your game using the launcher or a custom launcher instead of relying on browsers. Specially if you plan to use Canvas+. In addition, as soon as you create the zip file, it is possible that this won't work. My recommendation is to include them in your project.
In any case, it is not recommended to use this kind of characters in Android because the OS compresses all the resources on a zip file and moves then to the APP Storage and they can cause troubles.