Perhaps you should try some spelling variations:
"fop petriov OR petr OR petruv OR peterv OR peteri OR peter OR petru OR petri o.s.*" » "fop petrov OR petr OR petruv OR peterv OR peteri OR peter OR petru OR petri o.s.*" (Expand Search), "fop petroiov OR petro OR petrouv OR peterv OR peteri OR peter OR petrou OR petroi o.s.*" (Expand Search), "fop periov OR per OR peruv OR peterv OR peteri OR peter OR peru OR peri o.s.*" (Expand Search), "fop petriov OR petr OR petrov OR peterv OR peteri OR peter OR petru OR petri o.s.*" (Expand Search), "fop petriov OR petr OR petruv OR peters OR peteri OR peter OR petru OR petri o.s.*" (Expand Search), "fop petriov OR petr OR petruv OR peterv OR peterdi OR peter OR petru OR petri o.s.*" (Expand Search), "fop petriov OR petr OR petruv OR peterv OR peters OR peter OR petru OR petri o.s.*" (Expand Search), "fop petriov OR petr OR pentruv OR peterv OR peteri OR peter OR pentru OR petri 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 ((petr OR petruv) OR peterv)) OR (((peteri OR peter) OR petru) OR petri)) o.s.*.