Perhaps you should try some spelling variations:
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petrou » peterou (Expand Search), petruou (Expand Search), petroou (Expand Search), petru (Expand Search), petro (Expand Search), petrov (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petrooi » peterooi (Expand Search), petruooi (Expand Search), petroooi (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search)
peters » peter (Expand Search), petersen (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 ((petr OR petrou) OR ((((petri OR peteri) OR petrooi) OR peters) OR peters)) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop ((petr OR petrou) OR ((((petri OR peteri) OR petrooi) OR peters) OR peters)) _. s.*.