Perhaps you should try some spelling variations:
"fop petruv OR peruv OR petri OR pero OR petru OR peteru OR petr OR peter o.s.*" » "fop petrov OR peruv OR petri OR pero OR petru OR peteru OR petr OR peter o.s.*" (Expand Search), "fop petruv OR peruv OR petri OR petro OR petru OR peteru OR petr OR peter o.s.*" (Expand Search), "fop petruv OR peruv OR petri OR per OR petru OR peteru OR petr OR peter o.s.*" (Expand Search), "fop petruv OR peruv OR petri OR pro OR petru OR peteru OR petr OR peter o.s.*" (Expand Search), "fop pentruv OR peruv OR petri OR pero OR pentru OR peteru OR petr OR peter o.s.*" (Expand Search), "fop petruv OR peruv OR petri OR pero OR petru OR peters OR petr OR peter o.s.*" (Expand Search), "fop petrouv OR peruv OR petroi OR pero OR petrou OR peteru OR petro OR peter o.s.*" (Expand Search), "fop peruv OR peruv OR peri OR pero OR peru OR peteru OR per OR peter 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 ((petruv OR peruv) OR (((petri OR pero) OR (petru OR peteru)) OR (petr OR peter))) o.s.*.