Perhaps you should try some spelling variations:
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search)
petruou » pentruou (Expand Search), peteruou (Expand Search), petrouou (Expand Search)
petr » peter (Expand Search), petro (Expand Search)
petrou » peterou (Expand Search), petroou (Expand Search), petro (Expand Search), petrov (Expand Search), petrow (Expand Search)
petroou » peteroou (Expand Search), petrooou (Expand Search)
petroov » peteroov (Expand Search), petrooov (Expand Search), petrov (Expand Search)
petri » peteri (Expand Search), petroi (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 ((petru OR per) OR ((petr OR (((petrou OR petroou) OR petroov) OR petruou)) OR petri)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petru OR per) OR ((petr OR (((petrou OR petroou) OR petroov) OR petruou)) OR petri)) o.s.*".