Perhaps you should try some spelling variations:
"fop petriv OR petruuiv OR petriiv OR petruoiiv OR peteruoiiv OR petri OR petr o.s.*" » "fop peteriv OR peteruuiv OR peteriiv OR peteruoiiv OR peteruoiiv OR peteri OR peter o.s.*" (Expand Search), "fop petruiv OR petruuuiv OR petruiiv OR petruuoiiv OR peteruoiiv OR petrui OR petru o.s.*" (Expand Search), "fop petroiv OR petrouuiv OR petroiiv OR petrouoiiv OR peteruoiiv OR petroi OR petro 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 (((petriv OR petruuiv) OR (petriiv OR (petruoiiv OR peteruoiiv))) OR (petri OR petr)) o.s.*.