Perhaps you should try some spelling variations:
"fop petriov OR petrov OR petr OR petrio OR petero OR petri o.s.*" » "fop petriov OR petro OR petr OR petrio OR petero OR petri o.s.*" (Expand Search), "fop peteriov OR peterov OR peter OR peterio OR petero OR peteri o.s.*" (Expand Search), "fop petruiov OR petruov OR petru OR petruio OR petero OR petrui o.s.*" (Expand Search), "fop petroiov OR petroov OR petro OR petroio OR petero OR petroi o.s.*" (Expand Search), "fop petrisv OR petrov OR petr OR petris OR petero OR petri o.s.*" (Expand Search), "fop petrov OR petrov OR petr OR petro OR petero OR petri o.s.*" (Expand Search), "fop petriov OR petrov OR petr OR petrio OR peter OR petri o.s.*" (Expand Search), "fop petriov OR petrov OR petr OR petrio OR peters OR petri o.s.*" (Expand Search), "fop petriov OR petrov OR petr OR petrio OR petro OR petri 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 ((petriov OR petrov) OR (((petr OR petrio) OR petero) OR petri)) o.s.*.