Perhaps you should try some spelling variations:
perow » petrow (Expand Search)
petruvw » peteruvw (Expand Search), petrouvw (Expand Search), peruvw (Expand Search)
petruuw » peteruuw (Expand Search), petrouuw (Expand Search), peruuw (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petru » peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petrou » peterou (Expand Search), petroou (Expand Search), perou (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (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 (((((petruvw OR petruuw) OR perow) OR petr) o) OR (((petru OR petrou) OR petri) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((((petruvw OR petruuw) OR perow) OR petr) o) OR (((petru OR petrou) OR petri) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((((petruvw OR petruuw) OR perow) OR petr) o) OR (((petru OR petrou) OR petri) _)). s.*.