Perhaps you should try some spelling variations:
petriow » petrow (Expand Search), peteriow (Expand Search), petriiow (Expand Search), petroiow (Expand Search)
petrou » petro (Expand Search), petrov (Expand Search), petrow (Expand Search), peterou (Expand Search), petriou (Expand Search), petroou (Expand Search)
petroi » petri (Expand Search), petro (Expand Search), petrov (Expand Search), peteroi (Expand Search), petrioi (Expand Search), petrooi (Expand Search)
petrivw » peterivw (Expand Search), petriivw (Expand Search), petroivw (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (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 ((((petriow OR petrou) OR petrivw) o) OR ((petroi OR (petr OR petru)) _)). s.~".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriow OR petrou) OR petrivw) o) OR ((petroi OR (petr OR petru)) _)). s.*.