Perhaps you should try some spelling variations:
petriov » peteriov (Expand Search), petriiov (Expand Search), petroiov (Expand Search)
petroiiiov » peteroiiiov (Expand Search), petrioiiiov (Expand Search), petrooiiiov (Expand Search)
petrioiiiov » peterioiiiov (Expand Search), petriioiiiov (Expand Search), petroioiiiov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petriuiu » peteriuiu (Expand Search), petriiuiu (Expand Search), petroiuiu (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (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 (petroiiiov OR petrioiiiov)) OR (((petru OR petriuiu) OR peteruo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR (petroiiiov OR petrioiiiov)) OR (((petru OR petriuiu) OR peteruo) OR petr)) o.s.*".