Perhaps you should try some spelling variations:
"fop peteriv OR petruiv OR petro OR petrio OR pero OR petru OR peteru OR petr o.s.*" » "fop peteriv OR petruiv OR petrov OR petrio OR pero OR petru OR peteru OR petr o.s.*" (Expand Search), "fop peteriv OR petruiv OR petri OR petrio OR pero OR petru OR peteru OR petr o.s.*" (Expand Search), "fop peteriv OR peteruiv OR petero OR peterio OR pero OR peteru OR peteru OR peter o.s.*" (Expand Search), "fop peteriv OR petriuiv OR petrio OR petriio OR pero OR petriu OR peteru OR petri o.s.*" (Expand Search), "fop peteriv OR peruiv OR pero OR perio OR pero OR peru OR peteru 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 ((peteriv OR petruiv) OR ((((petro OR petrio) OR pero) OR (petru OR peteru)) OR petr)) o.s.*.