Perhaps you should try some spelling variations:
"fop petriv OR petruiv OR peteriv OR petru OR peteru OR petr OR petri o.s.*" » "fop petris OR petruiv OR peteriv OR petru OR peteru OR petr OR petri o.s.*" (Expand Search), "fop petrov OR petruiv OR peteriv OR petru OR peteru OR petr OR petri o.s.*" (Expand Search), "fop petriv OR pentruiv OR peteriv OR pentru OR peteru OR petr OR petri o.s.*" (Expand Search), "fop petriv OR petruiv OR peteriv OR petru OR peter OR petr OR petri o.s.*" (Expand Search), "fop petriv OR petruiv OR peteriv OR petru OR peters OR petr OR petri o.s.*" (Expand Search), "fop peteriv OR peteruiv OR peteriv OR peteru OR peteru OR peter OR peteri o.s.*" (Expand Search), "fop petroiv OR petrouiv OR peteriv OR petrou OR peteru OR petro OR petroi o.s.*" (Expand Search), "fop periv OR peruiv OR peteriv OR peru OR peteru OR per OR peri 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 petruiv) OR peteriv) OR ((petru OR peteru) OR (petr OR petri))) o.s.*.