Perhaps you should try some spelling variations:
"fop petrov OR peteruo OR peruo OR petr OR petru OR petrou OR peterou OR petri o.s.*" » "fop petro OR peteruo OR peruo OR petr OR petru OR petrou OR peterou OR petri o.s.*" (Expand Search), "fop peterov OR peteruo OR peruo OR peter OR peteru OR peterou OR peterou OR peteri o.s.*" (Expand Search), "fop petroov OR peteruo OR peruo OR petro OR petrou OR petroou OR peterou OR petroi o.s.*" (Expand Search), "fop perov OR peteruo OR peruo OR per OR peru OR perou OR peterou OR peri o.s.*" (Expand Search), "fop petrov OR peteruo OR peruo OR petr OR pentru OR petrou OR peterou OR petri o.s.*" (Expand Search), "fop petrov OR peteruo OR peruo OR petr OR petru OR petro OR peterou OR petri o.s.*" (Expand Search), "fop petrov OR peteruo OR peruo OR petr OR petru OR petrow OR peterou OR petri 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 ((peteruo OR peruo) OR (petr OR (((petru OR petrou) OR peterou) OR petri)))) o.s.*.