Perhaps you should try some spelling variations:
"fop petriov OR petroov OR petr OR petri OR petroiu OR petrou OR peter o.s.*" » "fop petrov OR petroov OR petr OR petri OR petroiu OR petrou OR peter o.s.*" (Expand Search), "fop petriov OR petrov OR petr OR petri OR petroiu OR petrou OR peter o.s.*" (Expand Search), "fop petruiov OR petruoov OR petru OR petrui OR petruoiu OR petruou OR peter o.s.*" (Expand Search), "fop petroiov OR petrooov OR petro OR petroi OR petrooiu OR petroou OR peter o.s.*" (Expand Search), "fop periov OR peroov OR per OR peri OR peroiu OR perou OR peter o.s.*" (Expand Search), "fop petriov OR petroov OR petr OR petri OR petroiu OR petru OR peter o.s.*" (Expand Search), "fop petriov OR petroov OR petr OR petri OR petroiu OR petro OR peter o.s.*" (Expand Search), "fop petriov OR petroov OR petr OR petri OR petroiu OR petrov 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 ((petriov OR petroov) OR ((petr OR ((petri OR petroiu) OR petrou)) OR peter)) o.s.*.