Hello Bons,
yes generally advertising your site can bring you referrals of course. But give things time to grow. When i started advertising my sites i wondered too, like you. It took me a week until i got my first referral. If i am looking at my referrals now i just can advise you not to advertise only some special countrys. I got people from russia, germany, african countrys... . I even got referrals from countrys where i don't know the name of.
PS: I made the experience that it is better to advertise your link on a ptc site for a longer time (maybe one-four weeks) than just 1000 clicks or something
I hope i could help you a bit