Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriuv » peteriuv (Expand Search), petriiuv (Expand Search), petruiuv (Expand Search)
petruuiov » peteruuiov (Expand Search), petriuuiov (Expand Search), petruuuiov (Expand Search)
petruiv » peteruiv (Expand Search), petriuiv (Expand Search), petruuiv (Expand Search)
petruuo » peteruuo (Expand Search), petriuuo (Expand Search), petruuuo (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petruiuo (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 ((((petriuv OR peteriov) OR petruuiov) OR petruiv) OR ((petruuo OR petriuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriuv OR peteriov) OR petruuiov) OR petruiv) OR ((petruuo OR petriuo) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriuv OR peteriov) OR petruuiov) OR petruiv) OR ((petruuo OR petriuo) OR petr)) o.s.*.