Perhaps you should try some spelling variations:
peterow » petrow (Expand Search)
petria » petri (Expand Search), petris (Expand Search), petra (Expand Search), peteria (Expand Search), petriia (Expand Search), petruia (Expand Search)
petroi » petri (Expand Search), petro (Expand Search), petrov (Expand Search), peteroi (Expand Search), petrioi (Expand Search), petruoi (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search), petri (Expand Search), petru (Expand Search), petris (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search), petri (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 (((peterow OR (petria OR petroi)) o) OR (((petr OR (petriu OR petriu)) OR peteri) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peterow OR (petria OR petroi)) o) OR (((petr OR (petriu OR petriu)) OR peteri) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((peterow OR (petria OR petroi)) o) OR (((petr OR (petriu OR petriu)) OR peteri) _)). s.*.