Perhaps you should try some spelling variations:
petroiv » peteroiv (Expand Search), petrioiv (Expand Search), petrooiv (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petroov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petroou (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petrouo (Expand Search)
petrooi » peterooi (Expand Search), petriooi (Expand Search), petroooi (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 (petroiv OR (((((petrov OR (petru OR petrou)) OR petruo) OR petrooi) OR petero) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petroiv OR (((((petrov OR (petru OR petrou)) OR petruo) OR petrooi) OR petero) OR petr)) o.s.*".