Perhaps you should try some spelling variations:
"fop petriiov OR petruv OR petriv OR peteriv OR peterv OR petruo OR petr o.s.*" » "fop petrov OR petruv OR petriv OR peteriv OR peterv OR petruo OR petr o.s.*" (Expand Search), "fop peteriiov OR peteruv OR peteriv OR peteriv OR peterv OR peteruo OR peter o.s.*" (Expand Search), "fop petriiiov OR petriuv OR petriiv OR peteriv OR peterv OR petriuo OR petri o.s.*" (Expand Search), "fop petruiiov OR petruuv OR petruiv OR peteriv OR peterv OR petruuo OR petru 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 (((petriiov OR petruv) OR ((petriv OR peteriv) OR peterv)) OR (petruo OR petr)) o.s.*.