Perhaps you should try some spelling variations:
"fop petrv OR petri OR petrov OR petruv OR petruv OR petro OR petr o.s.*" » "fop petrv OR petri OR petruv OR petruv OR petruv OR petru OR petr o.s.*" (Expand Search), "fop peterv OR peteri OR peterov OR peteruv OR peteruv OR petero OR peter o.s.*" (Expand Search), "fop petruv OR petrui OR petruov OR petruuv OR petruuv OR petruo OR petru o.s.*" (Expand Search), "fop perv OR peri OR perov OR peruv OR peruv OR pero 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 (petrv OR (petri OR (((petrov OR petruv) OR petruv) OR (petro OR petr)))) o.s.*.