Perhaps you should try some spelling variations:
"fop petrov OR petrio OR petroi OR petriuo OR petr OR peter o.s.*" » "fop petro OR petrio OR petroi OR petriuo OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petri OR petroi OR petriuo OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petris OR petroi OR petriuo OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petro OR petroi OR petriuo OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petrio OR petri OR petriuo OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petrio OR petro OR petriuo OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petrio OR petrow OR petriuo OR petr OR peter o.s.*" (Expand Search), "fop petriov OR petriio OR petrioi OR petriiuo OR petri OR peter o.s.*" (Expand Search), "fop petruov OR petruio OR petruoi OR petruiuo OR petru OR peter o.s.*" (Expand Search), "fop petroov OR petroio OR petrooi OR petroiuo 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 ((petrio OR (petroi OR petriuo)) OR (petr OR peter))) o.s.*.