Perhaps you should try some spelling variations:
"fop petrov OR petrouv OR pentruo OR pentru OR petr OR petru OR petri o.s.*" » "fop petro OR petrouv OR pentruo OR pentru OR petr OR petru OR petri o.s.*" (Expand Search), "fop peterov OR peterouv OR pentruo OR pentru OR peter OR peteru OR peteri o.s.*" (Expand Search), "fop petroov OR petroouv OR pentruo OR pentru OR petro OR petrou OR petroi o.s.*" (Expand Search), "fop perov OR perouv OR pentruo OR pentru OR per OR peru 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 ((petrov OR petrouv) OR ((pentruo OR pentru) OR ((petr OR petru) OR petri))) o.s.*.