Perhaps you should try some spelling variations:
"fop petruov OR petero OR petruo OR per OR petr OR petri o.s.*" » "fop petrov OR petero OR petruo OR per OR petr OR petri o.s.*" (Expand Search), "fop petruov OR peter OR petruo OR per OR petr OR petri o.s.*" (Expand Search), "fop petruov OR peters OR petruo OR per OR petr OR petri o.s.*" (Expand Search), "fop petruov OR petro OR petruo OR per OR petr OR petri o.s.*" (Expand Search), "fop petruv OR petero OR petru OR per OR petr OR petri o.s.*" (Expand Search), "fop petrov OR petero OR petro OR per OR petr OR petri o.s.*" (Expand Search), "fop peteruov OR petero OR peteruo OR per OR peter OR peteri o.s.*" (Expand Search), "fop petruuov OR petero OR petruuo OR per OR petru OR petrui o.s.*" (Expand Search), "fop petrouov OR petero OR petrouo OR per OR petro OR petroi 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 (((petero OR petruo) OR per) OR (petr OR petri))) o.s.*.