I have a question.help me

even i got Mount & Blade Warband and M&B Fire with Sword, I bought M&B Collection for Napoleonic Wars and Classic M&B.I bought all games box set but they are steamworks.My question is i got pair of cd-key both M&B Warband and M&B Fire with Sword,but there is only one in my game library.how can i give them away here or can i give them? what should i do?(Sorry for my bad english :(...)