Perhaps you should try some spelling variations:
petriuow » petrow (Expand Search), peteriuow (Expand Search), petriiuow (Expand Search), petruiuow (Expand Search)
petriouow » peteriouow (Expand Search), petriiouow (Expand Search), petruiouow (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petruoi (Expand Search)
petrioi » peterioi (Expand Search), petriioi (Expand Search), petruioi (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (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 ((((petriuow OR (petriouow OR peterow)) OR petr) o) OR (((petroi OR petrioi) OR petrui) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriuow OR (petriouow OR peterow)) OR petr) o) OR (((petroi OR petrioi) OR petrui) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriuow OR (petriouow OR peterow)) OR petr) o) OR (((petroi OR petrioi) OR petrui) _)). s.*.