Perhaps you should try some spelling variations:
peteruow » petrow (Expand Search)
petruuow » petrow (Expand Search), peteruuow (Expand Search), petriuuow (Expand Search), petruuuow (Expand Search)
petruow » peteruow (Expand Search), petriuow (Expand Search), petruuow (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petruoi (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (Expand Search)
petriui » peteriui (Expand Search), petriiui (Expand Search), petruiui (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 ((((peteruow OR (petruuow OR petruow)) OR petr) o) OR ((petroi OR (petrui OR petriui)) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peteruow OR (petruuow OR petruow)) OR petr) o) OR ((petroi OR (petrui OR petriui)) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((peteruow OR (petruuow OR petruow)) OR petr) o) OR ((petroi OR (petrui OR petriui)) _)). s.*.