Perhaps you should try some spelling variations:
petrooiov » peterooiov (Expand Search), petriooiov (Expand Search), petruooiov (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petrouo » peterouo (Expand Search), petriouo (Expand Search), petruouo (Expand Search)
petrio » peterio (Expand Search), petriio (Expand Search), petruio (Expand Search)
petriuio » peteriuio (Expand Search), petriiuio (Expand Search), petruiuio (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 (petrooiov OR ((((petrou OR petriu) OR petrouo) OR (petrio OR petriuio)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petrooiov OR ((((petrou OR petriu) OR petrouo) OR (petrio OR petriuio)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petrooiov OR ((((petrou OR petriu) OR petrouo) OR (petrio OR petriuio)) OR petr)) o.s.*.