Perhaps you should try some spelling variations:
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petrou » peterou (Expand Search), petruou (Expand Search), petroou (Expand Search), petru (Expand Search), petro (Expand Search), petrow (Expand Search)
petrooou » peterooou (Expand Search), petruooou (Expand Search), petroooou (Expand Search)
petriou » peteriou (Expand Search), petruiou (Expand Search), petroiou (Expand Search)
petrov » peterov (Expand Search), petruov (Expand Search), petroov (Expand Search), petro (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 petri) OR (petrou OR ((petrooou OR petriou) OR (petrov OR peteriov)))) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop ((petr OR petri) OR (petrou OR ((petrooou OR petriou) OR (petrov OR peteriov)))) _. s.*.