The only other thing you can do is to get another Snover (or any other Pokemon that can breed with Snover) that is not from your language. Other than that, there's nothing else you can do unfortunatley, as the Shiny Charm was not introduced until B2W2.
(If you decide to use another foreign language Pokemon other than Snover, make sure it's male, as the only way to breed Snover eggs is if the female Pokemon is a Snover itself, if that wasn't already obvious. I'd reccomend Ditto, as it can breed with any Pokemon outside of the Undiscovered egg group. Good luck!)