It's possible:
* The name is misspelled or slightly different. You might want to double-check the spelling and search for similar names.
* The person is not well-known or has worked primarily in a niche area. There could be many talented individuals working behind the scenes or in smaller productions.
* The person may not be in the public domain. It's also possible that this individual is working under a different name or has chosen to keep their work private.
If you have more information about Yuri Petrov, such as their nationality, profession, or specific movie/TV titles, it might be helpful to narrow down your search.