For other users to be able to find your Odnoklassniki page via search engines like Poisk@Mail.ru:

1. click "More" to the right of your main profile picture and select "Settings";
2. in the list of settings, select "Publicity";
3. select the best option for you in the "Advanced" section of the window that pops up
4. click "Save".

Please note that should you have elected to have a "Private Profile" any changes made to the "Publicity Settings" will result in your profile becoming public.