Hi Mitty, Unfortunately sharpness only normally goes up to 5 in vanilla minecraft, so any higher can't be crafted. You can only obtain higher levels of sharpness from Custom Items that can be obtained from crates, or bought from other players. (These higher levels of sharpness are only on weapons, not on books.) There are also custom items from the Elite Global Kit.
The only items that have Sharpness 10 or higher, are the Lightsabers from the Star Wars Crate, and the Carrot Sword that has Sharpness 25.
Let me know if you have any other questions :>