Perhaps you should try some spelling variations:
"fop petruov OR petriuiov OR periuuiov OR petri OR perui OR petr OR peter o.s.*" » "fop petrov OR petriuiov OR periuuiov OR petri OR perui OR petr OR peter o.s.*" (Expand Search), "fop petruuov OR petruiuiov OR periuuiov OR petrui OR perui OR petru OR peter o.s.*" (Expand Search), "fop petrouov OR petroiuiov OR periuuiov OR petroi OR perui OR petro OR peter o.s.*" (Expand Search), "fop peruov OR periuiov OR periuuiov OR peri OR perui OR per OR peter 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 ((petruov OR (petriuiov OR periuuiov)) OR ((petri OR perui) OR (petr OR peter))) o.s.*.