Perhaps you should try some spelling variations:
petriw » petri (Expand Search), petris (Expand Search), petrow (Expand Search), peteriw (Expand Search), petriiw (Expand Search), periw (Expand Search)
peterov » petrov (Expand Search)
petro » petrov (Expand Search), petri (Expand Search), petero (Expand Search), petrio (Expand Search), pero (Expand Search)
petr » peter (Expand Search), petri (Expand Search), per (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), peru (Expand Search), pentru (Expand Search), petri (Expand Search)
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), periiv (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 (((petriw OR ((peterov OR peterov) OR petro)) o) OR (((petr OR petru) OR petriiv) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriw OR ((peterov OR peterov) OR petro)) o) OR (((petr OR petru) OR petriiv) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petriw OR ((peterov OR peterov) OR petro)) o) OR (((petr OR petru) OR petriiv) _)). s.*.