Not all women can squirt, and also, real squirting isn't like what you see in some pornos where there's basically a stream of liquid shooting across the room. It's very little and comes in tiny squirts, you could easily miss it if you're really going at it or not paying attention. There's actually a few good informative videos out there about it, one in particular where there's this physical therapist dude and he has a woman laying on a table in what looks like a doctor's office, and explains the whole thing. In short, you can't just expect to have a huge dick or some fancy hand work. She's gotta be completely loosened up, deep in the experience, extremely turned on, feeling safe, feeling open, well massaged, etc..