hard to say without more information.are you sitting still?are you downwind of where you expect deer to come from?are deer even still in area or have they moved on?just a few things to think on.not knowing your area not much more I can add, if you have a specific question don't be afraid to ask it.
that's why it's called hunting, not killing. keep at it, persistence will pay off.everyone must learn as they go and none of us ever get to the point we know it all.