Perhaps you should try some spelling variations:
peterow » petrow (Expand Search)
petrio » petri (Expand Search), petro (Expand Search), peterio (Expand Search), petriio (Expand Search), petroio (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petruoi » peteruoi (Expand Search), petriuoi (Expand Search), petrouoi (Expand Search), pentruoi (Expand Search), petrioi (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
petris » peteris (Expand Search), petriis (Expand Search), petrois (Expand Search), petri (Expand Search)
petroiu » peteroiu (Expand Search), petrioiu (Expand Search), petrooiu (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 petrio) o) OR (((petr OR petruoi) OR ((petru OR petris) OR petroiu)) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peterow OR petrio) o) OR (((petr OR petruoi) OR ((petru OR petris) OR petroiu)) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((peterow OR petrio) o) OR (((petr OR petruoi) OR ((petru OR petris) OR petroiu)) _)). s.*.