Perhaps you should try some spelling variations:
"fop petrov OR petri OR petru OR petriu OR petroiu OR periu OR peru OR petr o.s.*" » "fop petrov OR petri OR petru OR petriu OR petroiu OR periu OR per OR petr o.s.*" (Expand Search), "fop peterov OR peteri OR peteru OR peteriu OR peteroiu OR periu OR peru OR peter o.s.*" (Expand Search), "fop petroov OR petroi OR petrou OR petroiu OR petrooiu OR periu OR peru OR petro o.s.*" (Expand Search), "fop perov OR peri OR peru OR periu OR peroiu OR periu OR peru OR per 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 ((petri OR ((petru OR ((petriu OR petroiu) OR periu)) OR peru)) OR petr)) o.s.*.