Perhaps you should try some spelling variations:
peterow » petrow (Expand Search)
peteru » peter (Expand Search), petru (Expand Search), peters (Expand Search)
petrou » petru (Expand Search), petro (Expand Search), petrov (Expand Search), peterou (Expand Search), petruou (Expand Search), petroou (Expand Search)
petroi » petro (Expand Search), petrov (Expand Search), petrow (Expand Search), peteroi (Expand Search), petruoi (Expand Search), petrooi (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((((peterow OR (peteru OR petrou)) OR perivw) o) OR (((petri OR petroi) OR petr) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peterow OR (peteru OR petrou)) OR perivw) o) OR (((petri OR petroi) OR petr) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((peterow OR (peteru OR petrou)) OR perivw) o) OR (((petri OR petroi) OR petr) _)). s.*.