The present invention relates to a washing machine and a server system that recommend a laundry course and washing tip information in consideration of information on a kind of laundry and a degree of contamination inputted by using artificial intelligence through speech recognition, and a method for controlling such washing machine and server system. The present invention extracts a cloth-word indicating a kind of clothes of laundry and a stain-word indicating a kind of contaminant. Then, the present invention determines a laundry course in consideration of the cloth-word. Then, washing tip information on the stain-word is searched in a pre-stored database and the searched washing tip information is provided to a user. As a result, the user can be notified of a washing method capable of effectively removing the contaminant.