Perhaps you should try some spelling variations:
"fop petruiv OR peteruiv OR petro OR peri OR petri OR peri OR petr o.s.*" » "fop petruiv OR peterdi OR petro OR peri OR petri OR peri OR petr o.s.*" (Expand Search), "fop petruiv OR peteruiv OR petrov OR peri OR petri OR peri OR petr o.s.*" (Expand Search), "fop petruiv OR peteruiv OR petru OR peri OR petri OR peri OR petr o.s.*" (Expand Search), "fop petruiv OR peteruiv OR petro OR per OR petri OR per OR petr o.s.*" (Expand Search), "fop peteruiv OR peteruiv OR petero OR peri OR peteri OR peri OR peter o.s.*" (Expand Search), "fop petruuiv OR peteruiv OR petruo OR peri OR petrui OR peri OR petru o.s.*" (Expand Search), "fop peruiv OR peteruiv OR pero OR peri OR peri OR peri 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 ((petruiv OR peteruiv) OR ((petro OR (peri OR (petri OR peri))) OR petr)) o.s.*.