Perhaps you should try some spelling variations:
peterv » peters (Expand Search)
petru » pentru (Expand Search), petri (Expand Search), petriu (Expand Search), petrou (Expand Search), peru (Expand Search)
petruo » pentruo (Expand Search), petrio (Expand Search), petro (Expand Search), petriuo (Expand Search), petrouo (Expand Search), peruo (Expand Search)
petruuo » pentruuo (Expand Search), petriuo (Expand Search), petriuuo (Expand Search), petrouuo (Expand Search), peruuo (Expand Search)
petroov » petrov (Expand Search), petrioov (Expand Search), petrooov (Expand Search), peroov (Expand Search)
petriuv » petriiuv (Expand Search), petroiuv (Expand Search), periuv (Expand Search)
petr » petri (Expand Search), petro (Expand Search), per (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 ((petriuv OR peterv) OR ((((petru OR petruo) OR petroov) OR petruuo) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuv OR peterv) OR ((((petru OR petruo) OR petroov) OR petruuo) OR (petr OR peter))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriuv OR peterv) OR ((((petru OR petruo) OR petroov) OR petruuo) OR (petr OR peter))) o.s.*.