Create facebook groups list based on marketing niche

Hi Guys, I hope I'm posting in the right section. After a long time searching on BHW, I decided to do the next step. I'm looking for any freelancer who can scrape bulk facebook groups by keywords. I know that jarvee probably can do this, but I prefer to do some outsourcing this time. Lets say I need to create list of 10 000 groups dedicated to online marketing. According to FB, there are 600 mln FB groups with the right tool it shouldent to find 10 000 ?