Perhaps you should try some spelling variations:
"fop petruov OR petroi OR petriio OR petruo OR petr OR peter o.s.*" » "fop petrov OR petroi OR petriio OR petruo OR petr OR peter o.s.*" (Expand Search), "fop petruov OR petri OR petriio OR petruo OR petr OR peter o.s.*" (Expand Search), "fop petruov OR petro OR petriio OR petruo OR petr OR peter o.s.*" (Expand Search), "fop petruov OR petrov OR petriio OR petruo OR petr OR peter o.s.*" (Expand Search), "fop petruv OR petroi OR petriio OR petru OR petr OR peter o.s.*" (Expand Search), "fop petrov OR petroi OR petriio OR petro OR petr OR peter o.s.*" (Expand Search), "fop petriuov OR petrioi OR petriiio OR petriuo OR petri OR peter o.s.*" (Expand Search), "fop petruuov OR petruoi OR petruiio OR petruuo OR petru OR peter o.s.*" (Expand Search), "fop petrouov OR petrooi OR petroiio OR petrouo 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 (petruov OR (((petroi OR petriio) OR petruo) OR (petr OR peter))) o.s.*.