Perhaps you should try some spelling variations:
petriw » petri (Expand Search), petrow (Expand Search), peteriw (Expand Search), petriiw (Expand Search), petruiw (Expand Search)
petruv » petru (Expand Search), petrov (Expand Search), peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
peteru » peter (Expand Search), petru (Expand Search), peters (Expand Search)
petroi » petri (Expand Search), petro (Expand Search), petrov (Expand Search), peteroi (Expand Search), petrioi (Expand Search), petruoi (Expand Search)
petruo » petru (Expand Search), petro (Expand Search), peteruo (Expand Search), petriuo (Expand Search), petruuo (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)
petris » peteris (Expand Search), petriis (Expand Search), petruis (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 (((petriw OR ((petruv OR (peteru OR petroi)) OR petruo)) o) OR ((petr OR petris) _)). s.~".
• Adding a wildcard symbol may retrieve word variants: fop (((petriw OR ((petruv OR (peteru OR petroi)) OR petruo)) o) OR ((petr OR petris) _)). s.*.