Perhaps you should try some spelling variations:
"fop petriiv OR petru OR peteru OR peteru OR peru OR petri OR peterio OR petr o.s.*" » "fop petriiv OR petru OR peteru OR peteru OR per OR petri OR peterio OR petr o.s.*" (Expand Search), "fop peteriiv OR peteru OR peteru OR peteru OR peru OR peteri OR peterio OR peter o.s.*" (Expand Search), "fop petroiiv OR petrou OR peteru OR peteru OR peru OR petroi OR peterio OR petro o.s.*" (Expand Search), "fop periiv OR peru OR peteru OR peteru OR peru OR peri OR peterio 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 (petriiv OR ((((((petru OR peteru) OR peteru) OR peru) OR petri) OR peterio) OR petr)) o.s.*.