Perhaps you should try some spelling variations:
"fop peterov OR petruv OR peteriv OR petro OR petrov OR peteru OR peru OR petr o.s.*" » "fop peterov OR petruv OR peteriv OR petri OR petriv OR peteru OR peru OR petr o.s.*" (Expand Search), "fop peterov OR petruv OR peteriv OR petru OR petruv OR peteru OR peru OR petr o.s.*" (Expand Search), "fop peterov OR petruv OR peteriv OR petro OR petrov OR peteru OR petru OR petr o.s.*" (Expand Search), "fop peterov OR petruv OR peteriv OR petro OR petrov OR peteru OR per OR petr o.s.*" (Expand Search), "fop peterov OR peteruv OR peteriv OR petero OR peterov OR peteru OR peru OR peter o.s.*" (Expand Search), "fop peterov OR petriuv OR peteriv OR petrio OR petriov OR peteru OR peru OR petri o.s.*" (Expand Search), "fop peterov OR petruuv OR peteriv OR petruo OR petruov OR peteru OR peru OR petru 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 peteriv) OR (((petro OR petrov) OR (peteru OR peru)) OR petr)) o.s.*.