You've probably got air in the right front.

Take the bleeder screw out (the one that wouldn't bleed), and use a probe or ice pick to poke into the threaded hole in the caliper that the bleeder valve came out of. It's probably just plugged up with corrosion. Make sure the valve is completely clean and free of any obstruction. Most likely, when you start poking around the threaded hole in the caliper, the fluid will start flowing out of it. I'm sure the manual will say that you'll have to bleed the whole system again, but you can probably just bleed the right front upper (it's on a different circuit than the right front lower. Then do the right rear in the same fashion.

If you can't get the thing bled at all, you'll have to take the caliper off the wheel, pop that cylinder piston out, find out what the obstruction is clean it, and rebuild it with some new rubber seals. If you see no obstruction in the calipers, look for a problem in the lines somewhere. But most likely it's just gunk built up inside the caliper right where the bleeder screw is. It's common.