Perhaps you should try some spelling variations:
"fop petruv OR petriv OR peteriuv OR petrov OR petru OR petruo OR petr OR per o.s.*" » "fop petruv OR petri OR peteriuv OR petrov OR petru OR petruo OR petr OR per o.s.*" (Expand Search), "fop petruv OR petris OR peteriuv OR petrov OR petru OR petruo OR petr OR per o.s.*" (Expand Search), "fop petruv OR petriv OR peteriuv OR petro OR petru OR petruo OR petr OR per o.s.*" (Expand Search), "fop pentruv OR petriv OR peteriuv OR petrov OR pentru OR pentruo OR petr OR per o.s.*" (Expand Search), "fop petriv OR petriv OR peteriuv OR petrov OR petri OR petrio OR petr OR per o.s.*" (Expand Search), "fop petruv OR petriv OR peteriuv OR petrov OR petru OR petro OR petr OR per o.s.*" (Expand Search), "fop peteruv OR peteriv OR peteriuv OR peterov OR peteru OR peteruo OR peter OR per o.s.*" (Expand Search), "fop petriuv OR petriiv OR peteriuv OR petriov OR petriu OR petriuo OR petri OR per o.s.*" (Expand Search), "fop petrouv OR petroiv OR peteriuv OR petroov OR petrou OR petrouo OR petro OR per 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 petriv) OR peteriuv) OR (((petrov OR petru) OR petruo) OR (petr OR per))) o.s.*.