Perhaps you should try some spelling variations:
petr » petri (Expand Search), petru (Expand Search), petro (Expand Search)
petroi » petrioi (Expand Search), petruoi (Expand Search), petrooi (Expand Search), petri (Expand Search), petro (Expand Search), petrow (Expand Search)
petrou » petriou (Expand Search), petruou (Expand Search), petroou (Expand Search), petru (Expand Search), petro (Expand Search), petrow (Expand Search)
petriou » petriiou (Expand Search), petruiou (Expand Search), petroiou (Expand Search)
petrov » petriov (Expand Search), petruov (Expand Search), petroov (Expand Search), petro (Expand Search)
petriiov » petriiiov (Expand Search), petruiiov (Expand Search), petroiiov (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 peter) OR (petroi OR ((petrou OR petriou) OR (petrov OR petriiov)))) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop ((petr OR peter) OR (petroi OR ((petrou OR petriou) OR (petrov OR petriiov)))) _. s.*.