Perhaps you should try some spelling variations:
petruow » petrow (Expand Search), petriuow (Expand Search), petruuow (Expand Search), petrouow (Expand Search)
petr » petri (Expand Search), petru (Expand Search), petro (Expand Search)
petruio » petriuio (Expand Search), petruuio (Expand Search), petrouio (Expand Search)
petriuio » petriiuio (Expand Search), petruiuio (Expand Search), petroiuio (Expand Search)
petruuuui » petriuuuui (Expand Search), petruuuuui (Expand Search), petrouuuui (Expand Search)
peters » petersen (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 (petruio OR petriuio))) o) OR (((peters OR peter) OR petruuuui) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruow OR (petr OR (petruio OR petriuio))) o) OR (((peters OR peter) OR petruuuui) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petruow OR (petr OR (petruio OR petriuio))) o) OR (((peters OR peter) OR petruuuui) _)). s.*.