Perhaps you should try some spelling variations:
"fop petriov OR periov OR petrui OR petrii OR petru OR petr OR peter o.s.*" » "fop petrov OR periov OR petrui OR petrii OR petru OR petr OR peter o.s.*" (Expand Search), "fop petriov OR periov OR petri OR petrii OR petru OR petr OR peter o.s.*" (Expand Search), "fop petriov OR periov OR petrui OR petri OR petru OR petr OR peter o.s.*" (Expand Search), "fop petriov OR periov OR petrui OR petris OR petru OR petr OR peter o.s.*" (Expand Search), "fop petriov OR periov OR pentrui OR petrii OR pentru OR petr OR peter o.s.*" (Expand Search), "fop petriov OR periov OR petrii OR petrii OR petri OR petr OR peter o.s.*" (Expand Search), "fop petriiov OR periov OR petriui OR petriii OR petriu OR petri OR peter o.s.*" (Expand Search), "fop petroiov OR periov OR petroui OR petroii OR petrou OR petro OR peter o.s.*" (Expand Search), "fop periov OR periov OR perui OR perii OR peru OR per 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 (((petriov OR periov) OR ((petrui OR petrii) OR petru)) OR (petr OR peter)) o.s.*.