Perhaps you should try some spelling variations:
"fop petriuv OR peteru OR peters OR petr OR peter OR petri OR petroi o.s.*" » "fop petriuv OR peteru OR peters OR petr OR peter OR petri OR petro o.s.*" (Expand Search), "fop petriuv OR peteru OR peters OR petr OR peter OR petri OR petrov o.s.*" (Expand Search), "fop petriuv OR peteru OR peters OR petr OR peter OR petri OR petrow 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 (petriuv OR ((peteru OR peters) OR ((petr OR peter) OR (petri OR petroi)))) o.s.*.