Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petroiiov » peteroiiov (Expand Search), petrioiiov (Expand Search), petruoiiov (Expand Search)
petriiiv » peteriiiv (Expand Search), petriiiiv (Expand Search), petruiiiv (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petrioou » peterioou (Expand Search), petriioou (Expand Search), petruioou (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 (((peteriov OR petroiiov) OR (peteriv OR petriiiv)) OR ((petriu OR petrioou) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peteriov OR petroiiov) OR (peteriv OR petriiiv)) OR ((petriu OR petrioou) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((peteriov OR petroiiov) OR (peteriv OR petriiiv)) OR ((petriu OR petrioou) OR petr)) o.s.*.