Perhaps you should try some spelling variations:
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petruiuo (Expand Search)
petroiiu » peteroiiu (Expand Search), petrioiiu (Expand Search), petruoiiu (Expand Search)
petrouio » peterouio (Expand Search), petriouio (Expand Search), petruouio (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop (petriov OR ((((petrou OR (petriuo OR peteroiuo)) OR petroiiu) OR petrouio) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriov OR ((((petrou OR (petriuo OR peteroiuo)) OR petroiiu) OR petrouio) OR petr)) o.s.*".