Search:

No, only one visa at a time, the previous one is cancelled when the new one is issued

If you work, and someone reports it, your friends mom will have a very large fine, and you will have to pay a fine and will be deported (not allowed to return) And you don't want to be in jail...

Your plan has some errors,

You will have to travel there with a tourist visa, Unless you are a professional or have about 50,000 to invest, you will have trouble getting a work visa.

You can...