Perhaps you should try some spelling variations:
"fop periv OR peteriv OR petri OR peteri OR petru OR peterio OR per OR peter o.s.*" » "fop periv OR peterdiv OR petri OR peterdi OR petru OR peterdio OR per OR peter o.s.*" (Expand Search), "fop periv OR petersv OR petri OR peters OR petru OR peterso OR per OR peter o.s.*" (Expand Search), "fop periv OR peteriv OR petri OR peteri OR pentru OR peterio OR per OR peter o.s.*" (Expand Search), "fop petriv OR peteriv OR petri OR peteri OR petru OR peterio OR petr 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 ((periv OR peteriv) OR ((((petri OR peteri) OR petru) OR peterio) OR (per OR peter))) o.s.*.