Perhaps you should try some spelling variations:
peterow » petrow (Expand Search)
petruow » petrow (Expand Search), peteruow (Expand Search), petriuow (Expand Search), petrouow (Expand Search), pentruow (Expand Search), petriow (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petrooi (Expand Search), petri (Expand Search), petro (Expand Search), petrov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
petriui » peteriui (Expand Search), petriiui (Expand Search), petroiui (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 petruow) OR (petr OR petroi)) o) OR ((petru OR (petriui OR peterdi)) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peterow OR petruow) OR (petr OR petroi)) o) OR ((petru OR (petriui OR peterdi)) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((peterow OR petruow) OR (petr OR petroi)) o) OR ((petru OR (petriui OR peterdi)) _)). s.*.