Cannot add Lv12+ Skills

[VaGo]

I cant learn the books for the sub-skill "Spinning Rod Attack" & the skill "PB Consecutive Attack Lv2"
i'm a monk lv35 and wearing a Rod, i tried use it in many maps and towns :3

I got the previous skills but it doesnt let me learn those T_T
I keep getting the message "Your poisition is not suitable for this equipment"

I need to do any quest or so? =S