Perhaps you should try some spelling variations:
petris » petri (Expand Search)
petra » petri (Expand Search), petr (Expand Search), petro (Expand Search)
peters » peter (Expand Search), petersen (Expand Search)
petruoi » pentruoi (Expand Search), petrioi (Expand Search)
petru » pentru (Expand Search), petri (Expand Search)
petroov » petrov (Expand Search)
petrou » petro (Expand Search), petrov (Expand Search), petrow (Expand Search)
per » petr (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((((petris OR (petra OR petruoi)) OR peters) OR petru) OR petroov) OR (petrou OR per)) o.s.~".
• Adding a wildcard symbol may retrieve word variants: fop (((((petris OR (petra OR petruoi)) OR peters) OR petru) OR petroov) OR (petrou OR per)) o.s.*.