Perhaps you should try some spelling variations:
"fop petrov OR peteriov OR peteriv OR peteruiv OR petrou OR peteru OR petr o.s.*" » "fop petrov OR peteriov OR peteriv OR peterdi OR petrou OR peteru OR petr o.s.*" (Expand Search), "fop peterov OR peteriov OR peteriv OR peteruiv OR peterou OR peteru OR peter o.s.*" (Expand Search), "fop petriov OR peteriov OR peteriv OR peteruiv OR petriou OR peteru OR petri o.s.*" (Expand Search), "fop petruov OR peteriov OR peteriv OR peteruiv OR petruou OR peteru 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 (((petrov OR peteriov) OR (peteriv OR peteruiv)) OR ((petrou OR peteru) OR petr)) o.s.*.