Never scream your puppy's name- he has a very acute sense of hearing and shouting will just stress him.  Instead, say his name slowly and clearly to catch his attention and associate his name with each command.

The first thing a puppy needs to learn is his name, and the shorter it is the easier it is for the puppy to remember.

• Call; your puppy by his name right from the outset. 
• Before you call his name, do something nice with him so that he is encouraged to do what you ask.
• When he comes to his name, give him lots of love and petting
• If he doesn't come straight away, don't tell hims off he'll be even slower next time.