Perhaps you should try some spelling variations:
"fop petriv OR peteriv OR peruiv OR petri OR petrov OR petru OR petr o.s.*" » "fop peteriv OR peteriv OR peruiv OR peteri OR peterov OR peteru OR peter o.s.*" (Expand Search), "fop petroiv OR peteriv OR peruiv OR petroi OR petroov OR petrou OR petro o.s.*" (Expand Search), "fop periv OR peteriv OR peruiv OR peri OR perov OR peru OR per 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 peteriv) OR peruiv) OR (((petri OR petrov) OR petru) OR petr)) o.s.*.