analysis of a Persian/Arabic survey

Hello,

I have created a survey in Persian, and in the beginning I asked participants for their city, illness, ... which they obviously write it in Persian. But when I download the data, these words are not legible. They are characters like Ø³Ù†Ù†Ø¯Ø¬, or طھظ‡ط±ط§ظ†. So I cannot understand what these mean and how can I change them to legible words. Any help?

Thanks