Perhaps you should try some spelling variations:
"fop peroov OR petruiv OR petruuiu OR peteroiuo OR petr OR peter OR petri o.s.*" » "fop peroov OR petruuiv OR petruuuiu OR peteroiuo OR petru OR peter OR petrui o.s.*" (Expand Search), "fop peroov OR petrouiv OR petrouuiu OR peteroiuo OR petro OR peter OR petroi o.s.*" (Expand Search), "fop peroov OR peruiv OR peruuiu OR peteroiuo OR per OR peter OR peri 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 ((peroov OR petruiv) OR ((petruuiu OR peteroiuo) OR ((petr OR peter) OR petri))) o.s.*.