Use the social network. You know the city and the name of the person, some idea of how he looks and what he does, this is enough to make the request. If your friend or relative has registered in the network Facebook, Vkontakte or Odnoklassniki, type in the city of Chelyabinsk, as well as the name and surname and immediately you will be able to find the address, phone number, place of employment and other data for the right person. In addition, it will be possible immediately to write a personal message and to communicate directly.
If the search networks have not yielded results, use a telephone databases. You know the city, and therefore know the area code. Go to the website to find the desired number. However, the databases only have landline numbers. Mobile are confidential, and in the database.
When the remote search returns no results, go to the city. You can help the police to say where was the person on the passport and did not appear whether he was in any Affairs in any capacity. But to help the cops you are only obliged in case if a person is missing, and you filed about it the corresponding statement. If since the disappearance in less than three days are likely to find they will not. When ATC exists, the city paid inquiry service, you can try to contact them.
If you have contacts in the passport office or in housing, you can try to look for with them. In a house management you will be able to tell whether this lived people on their addresses, where they had moved and not changed the name.
Gather as much information as possible about the individual. Chelyabinsk is a large city, but it is not the capital, so if your friend is engaged in some rare case, for example, he is an artist or a musician, it can know in the appropriate circles of the city. Search will be easier if looks wanted are there any special signs.
In an extreme case, hire a private investigator. May his services and will cost a lot of money, but if it is a licensed expert, he has access to such databases, which will remain closed. Do not lose hope and look for, no matter what!