You must encode the address-part, it should be:
http://maps.googleapis.com/maps/api/geocode/json?address=%D8%AC%D8%AF%D8%A9+%2B%D8%A7%D9%84%D8%B3%D9%84%D9%8A%D9%85%D8%A7%D9%86%D9%8A%D8%A9+%22&sensor=false&language=ar
How to encode it depends on the used programming-language