Perhaps you should try some spelling variations:
"fop petriov OR petruov OR petriuov OR petriov OR petero OR petr o.s.*" » "fop petriov OR petruov OR petrov OR petriov OR petero OR petr o.s.*" (Expand Search), "fop peteriov OR peteruov OR peteriuov OR peteriov OR petero OR peter o.s.*" (Expand Search), "fop petriiov OR petriuov OR petriiuov OR petriiov OR petero OR petri o.s.*" (Expand Search), "fop petruiov OR petruuov OR petruiuov OR petruiov OR petero 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 ((petriov OR (petruov OR (petriuov OR petriov))) OR (petero OR petr)) o.s.*.