Make sure you are filling the reservoir up high enough. The reservoir section that supplies fluid for the clutch only gets filled when the fluid level is really high.
Illuminate the backside of the reservoir and see if the back section has any fluid in it.
Also, make sure your clutch pedal can completely release the clutch master cylinder. It has to be fully out to open a fluid passage into the clutch master cylinder. If the clutch is even slightly depressed, it will block the flow and keep you from bleeding the system.
This is more common in early models with pushbutton switches. The top switch can interfere with the clutch pedal returning.
Also, if the return spring is broken on your clutch pedal, you may have to physically pull the pedal up and hold it until you get it bled.