Random Episodes
Skank Hunt
The boys decide they have to take down Cartman but meanwhile, Skank Hunt takes his rein of terror global. 
Dead Kids
Sharon is overreacting to everything these days and Randy can't cope. Randy is desperate to help Sharon get her emotions under control and Cartman unexpectedly fails his math test. 
The Snuke
The citizens of South Park are gearing up for the arrival of Hillary Clinton for a big campaign rally. Meanwhile, Cartman suspects that a new Muslim student is involved in a possible terrorist attack.... Search Episodes
If you're looking for an episode but cant remember which season it's in but can remember part of the title use this.
Short searches like "cartman" usually yield best results.
