Error Message

I would like to give some feedback about ...

From: http://www.checkio.org/mission/monkey-typing/solve/

This is my code:

          def count_words(text, words):
                count = 0
                for word in words:
                    if word in text:
                       count = count + 1                      
                print(count)
                return count 

    if __name__ == '__main__':
        #These "asserts" using only for self-checking and not necessary for auto-testing
        assert count_words("How aresjfhdskfhskd you?", {"How", "are", "you", "hello"}) == 3, "Example"
        assert count_words("Bananas, give me bananas!!!", {"banana", "bananas"}) == 2, "BANANAS!"
        assert count_words("Lorem ipsum dolor sit amet, consectetuer adipiscing elit.",
                           {"sum", "hamlet", "infinity", "anything"}) == 1, "Weird text"

I keep getting this message:

 Your result: 2
Right result: 3
Fail: count_words('How aresjfhdskfhskd you?', {'you', 'how', 'hello', 'are'})