Try these in an emulator:
Cannon Drill: D, D/F, F + Kick
Thrust Kick: F, D, D/F + Kick
Spinning Knuckle: B, D/B, F + Punch
Also, the Cannon Spike and Spriral Arrow voice's are in the CPS-2 Q-Sound ROM's but were never used in the final version of the game.
Here are the 2 voices that every one keeps mistaking to be other words.
http://rzx.emugenerations.com/Cammy.MP3
Hopefully this clears things up.