Perhaps you should try some spelling variations:
"fop petrov OR petroiiov OR peterov OR peteriv OR petrioiiv OR petrou OR petr o.s.*" » "fop peterov OR peteroiiov OR peterov OR peteriv OR peterioiiv OR peterou OR peter o.s.*" (Expand Search), "fop petriov OR petrioiiov OR peterov OR peteriv OR petriioiiv OR petriou OR petri o.s.*" (Expand Search), "fop petruov OR petruoiiov OR peterov OR peteriv OR petruioiiv OR petruou OR petru 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 ((((petrov OR petroiiov) OR peterov) OR (peteriv OR petrioiiv)) OR (petrou OR petr)) o.s.*.