Perhaps you should try some spelling variations:
petruow » petrow (Expand Search), peteruow (Expand Search), petruuow (Expand Search), petrouow (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petrui » peterui (Expand Search), petruui (Expand Search), petroui (Expand Search), petru (Expand Search)
petruuui » peteruuui (Expand Search), petruuuui (Expand Search), petrouuui (Expand Search)
petrouui » peterouui (Expand Search), petruouui (Expand Search), petroouui (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search), peters (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 (((petruow OR (petr OR petri)) o) OR ((peteri OR (petrui OR (petruuui OR petrouui))) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruow OR (petr OR petri)) o) OR ((peteri OR (petrui OR (petruuui OR petrouui))) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petruow OR (petr OR petri)) o) OR ((peteri OR (petrui OR (petruuui OR petrouui))) _)). s.*.