Perhaps you should try some spelling variations:
"fop petriiv OR petriiuiv OR petriiuiv OR peters OR petr OR peter o.s.*" » "fop petriiv OR petriiuiv OR petriiuiv OR petersen OR petr OR peter o.s.*" (Expand Search), "fop petriiiv OR petriiiuiv OR petriiiuiv OR peters OR petri OR peter o.s.*" (Expand Search), "fop petruiiv OR petruiiuiv OR petruiiuiv OR peters OR petru OR peter o.s.*" (Expand Search), "fop petroiiv OR petroiiuiv OR petroiiuiv OR peters OR petro OR peter 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 (petriiuiv OR petriiuiv)) OR (peters OR (petr OR peter))) o.s.*.