Friends can not find me on the search

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Hello,

I have created an account on Spotify and make some playlists. I just wanted to be sure that my account is visible and search my name from my friend's account but nothing was founded. Then write one of my playlist's name and see that there is a number consists of lots of numbers and letters. I have already confirm the account via email received from Spotify. What could be the problem and how can I solve it? 

Thanks in advance