Perhaps you should try some spelling variations:
petruv » petrov (Expand Search), pentruv (Expand Search), petriv (Expand Search), petriuv (Expand Search), petrouv (Expand Search), peruv (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)
petriiio » petriiiio (Expand Search), petroiiio (Expand Search), periiio (Expand Search)
petr » petri (Expand Search), petro (Expand Search), per (Expand Search)
petroou » petrioou (Expand Search), petrooou (Expand Search), peroou (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 (((petruv OR peruv) OR petru) OR ((petruo OR petriiio) OR ((petr OR petroou) OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruv OR peruv) OR petru) OR ((petruo OR petriiio) OR ((petr OR petroou) OR peter))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petruv OR peruv) OR petru) OR ((petruo OR petriiio) OR ((petr OR petroou) OR peter))) o.s.*.