Perhaps you should try some spelling variations:
"fop petriov OR peteriiv OR peteriuiv OR petruuiv OR petro OR petruov OR petr o.s.*" » "fop petriov OR peterdi OR peteriuiv OR petruuiv OR petro OR petruov OR petr o.s.*" (Expand Search), "fop petriov OR peteriiv OR peteriuiv OR petruuiv OR petrov OR petruov OR petr o.s.*" (Expand Search), "fop petriov OR peteriiv OR peteriuiv OR petruuiv OR petri OR petruov OR petr o.s.*" (Expand Search), "fop petriov OR peteriiv OR peteriuiv OR petruuiv OR petru OR petruov OR petr o.s.*" (Expand Search), "fop peteriov OR peteriiv OR peteriuiv OR peteruuiv OR petero OR peteruov OR peter o.s.*" (Expand Search), "fop petriiov OR peteriiv OR peteriuiv OR petriuuiv OR petrio OR petriuov OR petri o.s.*" (Expand Search), "fop petruiov OR peteriiv OR peteriuiv OR petruuuiv OR petruo OR petruuov 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 ((petriov OR (peteriiv OR (peteriuiv OR petruuiv))) OR ((petro OR petruov) OR petr)) o.s.*.