There are different strategies to train dogs.
Looking at your behavior when you're training your pet. It must be kept quiet, but firm at all times. They tend not to show anger or raise your voice.
To teach the dog how to best serve the needs of basic techniques, but a large amount of repetition.
Need to impose more training will give you your four-legged friend.
Can induce him to sit a little 'more difficult, but requires only basic training of the dog.