Perhaps you should try some spelling variations:
"fop petruv OR petrov OR peteruo OR pentruo OR petr OR petri o.s.*" » "fop petru OR petrov OR peteruo OR pentruo OR petr OR petri o.s.*" (Expand Search), "fop petruv OR petro OR peteruo OR pentruo OR petr OR petri o.s.*" (Expand Search), "fop petruv OR petrov OR peteruo OR pentru OR petr OR petri o.s.*" (Expand Search), "fop peteruv OR peterov OR peteruo OR pentruo OR peter OR peteri o.s.*" (Expand Search), "fop petruuv OR petruov OR peteruo OR pentruo OR petru OR petrui o.s.*" (Expand Search), "fop petrouv OR petroov OR peteruo OR pentruo 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 (petruv OR ((petrov OR (peteruo OR pentruo)) OR (petr OR petri))) o.s.*.