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)
petruuuo » petriuuuo (Expand Search), petruuuuo (Expand Search), petrouuuo (Expand Search)
petrui » petriui (Expand Search), petruui (Expand Search), petroui (Expand Search), petri (Expand Search), petru (Expand Search)
petruui » petriuui (Expand Search), petruuui (Expand Search), petrouui (Expand Search)
petruuui » petriuuui (Expand Search), petruuuui (Expand Search), petrouuui (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruow OR (petr OR peter)) o) OR ((petruuuo OR (petrui OR (petruui OR petruuui))) _)). s.~".
• Adding a wildcard symbol may retrieve word variants: fop (((petruow OR (petr OR peter)) o) OR ((petruuuo OR (petrui OR (petruui OR petruuui))) _)). s.*.