Perhaps you should try some spelling variations:
"fop petriiv OR peteruv OR petruiov OR petrov OR peteru OR peteruo OR petr o.s.*" » "fop peteriiv OR peteruv OR peteruiov OR peterov OR peteru OR peteruo OR peter o.s.*" (Expand Search), "fop petriiiv OR peteruv OR petriuiov OR petriov OR peteru OR peteruo OR petri o.s.*" (Expand Search), "fop petruiiv OR peteruv OR petruuiov OR petruov OR peteru OR peteruo 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 (((petriiv OR peteruv) OR (petruiov OR petrov)) OR ((peteru OR peteruo) OR petr)) o.s.*.