Perhaps you should try some spelling variations:
"fop petrov OR peterov OR petero OR pero OR petruiou OR petr OR peter o.s.*" » "fop petro OR peterov OR petero OR pero OR petruiou OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petersv OR peters OR pero OR petruiou OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petrov OR petro OR pero OR petruiou OR petr OR peter o.s.*" (Expand Search), "fop petrov OR peterov OR petero OR petro OR petruiou OR petr OR peter o.s.*" (Expand Search), "fop petrov OR peterov OR petero OR per OR petruiou OR petr OR peter o.s.*" (Expand Search), "fop petrov OR peterov OR petero OR pro OR petruiou OR petr OR peter o.s.*" (Expand Search), "fop petriov OR peterov OR petero OR pero OR petriuiou OR petri OR peter o.s.*" (Expand Search), "fop petruov OR peterov OR petero OR pero OR petruuiou OR petru OR peter o.s.*" (Expand Search), "fop petroov OR peterov OR petero OR pero OR petrouiou 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 ((petrov OR peterov) OR (((petero OR pero) OR petruiou) OR (petr OR peter))) o.s.*.