I am trying to get some locations in New York using FourSquare API using the following API call:

https://api.foursquare.com/v2/venues/search?ll=40.7,-74&limit=50

What I don't understand is that if the call imposes a limit of 50 search results (which is the maximum), how can I get more locations? When using Facebook API, the results being returned were random so I could issue multiple calls to get more results but FourSquare seems to be returning the same result set. Is there a good way to get more locations?
EDIT:
Ok. So there was a comment saying that I could be breaking a contractual agreement and I am not sure why this would be the case. I would gladly accept a reasoning for this. My doubt is this: Let us say that hypothetically, the location I am searching for is not in the 50 results returned? In that case, shouldn't there be a pagination mechanism somewhere?
The current API limits results to 50. You should try altering your coordinates to be more precise to avoid not finding your venue.
Pagination would be nice but 50 is a lot of venues for a search.
How do I get more locations?