Perhaps you should try some spelling variations:
"fop petriov OR petrv OR peteriv OR peterv OR petrov OR petru OR petr o.s.*" » "fop peteriov OR peterv OR peteriv OR peterv OR peterov OR peteru OR peter o.s.*" (Expand Search), "fop petriiov OR petriv OR peteriv OR peterv OR petriov OR petriu OR petri o.s.*" (Expand Search), "fop petroiov OR petrov OR peteriv OR peterv OR petroov OR petrou OR petro 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 ((petrv OR peteriv) OR peterv)) OR ((petrov OR petru) OR petr)) o.s.*.