Perhaps you should try some spelling variations:
"fop petruov OR pera OR petrua OR peterua OR peter OR petr OR petru OR petri o.s.*" » "fop petruov OR opera OR petrua OR peterua OR peter OR petr OR petru OR petri o.s.*" (Expand Search), "fop petruov OR petra OR petrua OR peterua OR peter OR petr OR petru OR petri o.s.*" (Expand Search), "fop petruov OR gera OR petrua OR peterua OR peter OR petr OR petru OR petri 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 ((petruov OR ((pera OR ((petrua OR peterua) OR peter)) OR (petr OR petru))) OR petri) o.s.*.