Perhaps you should try some spelling variations:
petro » petrov (Expand Search), petri (Expand Search), petru (Expand Search), petero (Expand Search), petrio (Expand Search), petruo (Expand Search)
petruiov » petrov (Expand Search), peteruiov (Expand Search), petriuiov (Expand Search), petruuiov (Expand Search)
peteriov » petrov (Expand Search)
petriuiv » peteriuiv (Expand Search), petriiuiv (Expand Search), petruiuiv (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 ((peterdi OR petriuiv) OR (((petro OR petriuo) OR (petruiov OR peteriov)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterdi OR petriuiv) OR (((petro OR petriuo) OR (petruiov OR peteriov)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peterdi OR petriuiv) OR (((petro OR petriuo) OR (petruiov OR peteriov)) OR petr)) o.s.*.