Perhaps you should try some spelling variations:
"fop petriv OR petero OR petrov OR petr OR petruui OR peterdi o.s.*" » "fop petri OR petero OR petrov OR petr OR petruui OR peterdi o.s.*" (Expand Search), "fop petris OR petero OR petrov OR petr OR petruui OR peterdi o.s.*" (Expand Search), "fop petriv OR peter OR petrov OR petr OR petruui OR peterdi o.s.*" (Expand Search), "fop petriv OR peters OR petrov OR petr OR petruui OR peterdi o.s.*" (Expand Search), "fop petriv OR petro OR petrov OR petr OR petruui OR peterdi o.s.*" (Expand Search), "fop petriv OR petero OR petro OR petr OR petruui OR peterdi o.s.*" (Expand Search), "fop peteriv OR petero OR peterov OR peter OR peteruui OR peterdi o.s.*" (Expand Search), "fop petriiv OR petero OR petriov OR petri OR petriuui OR peterdi o.s.*" (Expand Search), "fop petruiv OR petero OR petruov OR petru OR petruuui OR peterdi o.s.*" (Expand Search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: fop (petriv OR ((petero OR petrov) OR ((petr OR petruui) OR peterdi))) o.s.*.