Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petruiov » petrov (Expand Search), peteruiov (Expand Search), petriuiov (Expand Search), petruuiov (Expand Search)
petrioov » petrov (Expand Search), peterioov (Expand Search), petriioov (Expand Search), petruioov (Expand Search)
petruiu » peteruiu (Expand Search), petriuiu (Expand Search), petruuiu (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (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 petruiov) OR petrioov) OR (petruiu OR ((petero OR petruo) OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peteriov OR petruiov) OR petrioov) OR (petruiu OR ((petero OR petruo) OR petr))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((peteriov OR petruiov) OR petrioov) OR (petruiu OR ((petero OR petruo) OR petr))) o.s.*.