Perhaps you should try some spelling variations:
"fop petruov OR petro OR petri OR pero OR peri OR peteri OR peter o.s.*" » "fop petruov OR petrov OR petri OR pero OR peri OR peteri OR peter o.s.*" (Expand Search), "fop petruov OR petru OR petri OR pero OR peri OR peteri OR peter o.s.*" (Expand Search), "fop petruov OR petr OR petri OR pero OR peri OR peteri OR peter o.s.*" (Expand Search), "fop petruov OR petro OR petri OR pero OR per OR peteri 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 ((((petro OR petri) OR pero) OR (peri OR peteri)) OR peter)) o.s.*.