Perhaps you should try some spelling variations:
"fop petruv OR peterov OR petruiv OR petri OR petrov OR petr OR per OR peter o.s.*" » "fop petru OR peterov OR petruiv OR petri OR petrov OR petr OR per OR peter o.s.*" (Expand Search), "fop petruv OR peterov OR petruiv OR petri OR petro OR petr OR per OR peter o.s.*" (Expand Search), "fop petruuv OR peterov OR petruuiv OR petrui OR petruov OR petru OR per OR peter o.s.*" (Expand Search), "fop petrouv OR peterov OR petrouiv OR petroi OR petroov OR petro 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 (((petruv OR peterov) OR (petruiv OR petri)) OR (petrov OR ((petr OR per) OR peter))) o.s.*.