Perhaps you should try some spelling variations:
"fop peterov OR petriv OR peteriv OR petruiv OR peteruo OR petr OR petri o.s.*" » "fop petrov OR petriv OR peteriv OR petruiv OR peteruo OR petr OR petri o.s.*" (Expand Search), "fop peterov OR petris OR peteriv OR petruiv OR peteruo OR petr OR petri o.s.*" (Expand Search), "fop peterov OR petrov OR peteriv OR petruiv OR peteruo OR petr OR petri o.s.*" (Expand Search), "fop peterov OR peteriv OR peteriv OR peteruiv OR peteruo OR peter OR peteri o.s.*" (Expand Search), "fop peterov OR petruiv OR peteriv OR petruuiv OR peteruo OR petru OR petrui o.s.*" (Expand Search), "fop peterov OR petroiv OR peteriv OR petrouiv OR peteruo OR petro OR petroi 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 ((petriv OR peteriv) OR petruiv)) OR (peteruo OR (petr OR petri))) o.s.*.