Perhaps you should try some spelling variations:
"fop petriv OR petrou OR petrov OR peterov OR petr OR petri OR peterdi OR per o.s.*" » "fop petris OR petrou OR petrov OR peterov OR petr OR petri OR peterdi OR per o.s.*" (Expand Search), "fop petriv OR petru OR petrov OR peterov OR petr OR petri OR peterdi OR per o.s.*" (Expand Search), "fop petriv OR petro OR petrov OR peterov OR petr OR petri OR peterdi OR per o.s.*" (Expand Search), "fop petriv OR petrow OR petrov OR peterov OR petr OR petri OR peterdi OR per o.s.*" (Expand Search), "fop petriv OR petrou OR petro OR peterov OR petr OR petri OR peterdi OR per o.s.*" (Expand Search), "fop peteriv OR peterou OR peterov OR peterov OR peter OR peteri OR peterdi OR per o.s.*" (Expand Search), "fop petruiv OR petruou OR petruov OR peterov OR petru OR petrui OR peterdi OR per o.s.*" (Expand Search), "fop petroiv OR petroou OR petroov OR peterov OR petro OR petroi OR peterdi 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 (((petrou OR petrov) OR peterov) OR (petr OR ((petri OR peterdi) OR per)))) o.s.*.