Perhaps you should try some spelling variations:
"fop peterov OR petruv OR petruiuv OR petero OR petr OR petri OR peter o.s.*" » "fop petrov OR petruv OR petruiuv OR petero OR petr OR petri OR peter o.s.*" (Expand Search), "fop peterov OR petru OR petruiuv OR petero OR petr OR petri OR peter o.s.*" (Expand Search), "fop peterov OR petrov OR petruiuv OR petero OR petr OR petri OR peter o.s.*" (Expand Search), "fop petersv OR petruv OR petruiuv OR peters OR petr OR petri OR peter o.s.*" (Expand Search), "fop petrov OR petruv OR petruiuv OR petro OR petr OR petri OR peter o.s.*" (Expand Search), "fop peterov OR petruuv OR petruuiuv OR petero OR petru OR petrui OR peter o.s.*" (Expand Search), "fop peterov OR petrouv OR petrouiuv OR petero OR petro OR petroi OR peter o.s.*" (Expand Search), "fop peterov OR peruv OR peruiuv OR petero OR per OR peri 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 ((peterov OR (petruv OR petruiuv)) OR (petero OR ((petr OR petri) OR peter))) o.s.*.