Perhaps you should try some spelling variations:
"fop peterov OR petriov OR petrio OR periio OR petr OR petru OR peter o.s.*" » "fop petrov OR petriov OR petrio OR periio OR petr OR petru OR peter o.s.*" (Expand Search), "fop peterov OR petrov OR petrio OR periio OR petr OR petru OR peter o.s.*" (Expand Search), "fop peterov OR petriv OR petri OR periio OR petr OR petru OR peter o.s.*" (Expand Search), "fop peterov OR petrisv OR petris OR periio OR petr OR petru OR peter o.s.*" (Expand Search), "fop peterov OR petrov OR petro OR periio OR petr OR petru OR peter o.s.*" (Expand Search), "fop peterov OR petriiov OR petriio OR periio OR petri OR petriu OR peter o.s.*" (Expand Search), "fop peterov OR petroiov OR petroio OR periio OR petro OR petrou OR peter o.s.*" (Expand Search), "fop peterov OR periov OR perio OR periio OR per OR peru OR peter o.s.*" (Expand Search), "fop peterov OR petriov OR petrio OR periio OR petr OR pentru OR peter o.s.*" (Expand Search), "fop peterov OR petriov OR petrio OR periio OR petr OR petri 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 ((peterov OR petriov) OR ((petrio OR periio) OR ((petr OR petru) OR peter))) o.s.*.