Perhaps you should try some spelling variations:
peru » per (Expand Search)
petrouiov » peterouiov (Expand Search), petroouiov (Expand Search), perouiov (Expand Search)
petruov » peteruov (Expand Search), petrouov (Expand Search), peruov (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (Expand Search)
petru » peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petroiu » peteroiu (Expand Search), petrooiu (Expand Search), peroiu (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (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 ((petrouiov OR petruov) OR ((((petri OR peteri) OR (petru OR peru)) OR petroiu) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petrouiov OR petruov) OR ((((petri OR peteri) OR (petru OR peru)) OR petroiu) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petrouiov OR petruov) OR ((((petri OR peteri) OR (petru OR peru)) OR petroiu) OR petr)) o.s.*.