Perhaps you should try some spelling variations:
"fop petriv OR peterv OR petrov OR petro OR petriio OR petero OR peri OR petr o.s.*" » "fop petriv OR peterv OR petriv OR petri OR petriio OR petero OR peri OR petr o.s.*" (Expand Search), "fop petriv OR peterv OR petruv OR petru OR petriio OR petero OR peri OR petr o.s.*" (Expand Search), "fop petriv OR peterv OR petrov OR petro OR petriio OR petero OR petri OR petr o.s.*" (Expand Search), "fop petriv OR peterv OR petrov OR petro OR petriio OR petero OR per OR petr o.s.*" (Expand Search), "fop peteriv OR peterv OR peterov OR petero OR peteriio OR petero OR peri OR peter o.s.*" (Expand Search), "fop petriiv OR peterv OR petriov OR petrio OR petriiio OR petero OR peri OR petri o.s.*" (Expand Search), "fop petruiv OR peterv OR petruov OR petruo OR petruiio OR petero OR peri OR petru 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 ((petriv OR peterv) OR (petrov OR ((((petro OR petriio) OR petero) OR peri) OR petr))) o.s.*.