I found almost all of my students at this site.
You can also try repetitors.info
You have to pay them the price for the first lesson (and a little more, I guess) but then they leave you alone, and I found a ton of good students through them. I think with them you can pretty much fill your schedule and it's a lot better than working for a "school."
I made an ad at izrukvruki online but only got one answer so I am not sure people check it much.
Properties In India