Perhaps you should try some spelling variations:
petroiv » petrov (Expand Search), peteroiv (Expand Search), petrooiv (Expand Search), peroiv (Expand Search)
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petruiio » pentruiio (Expand Search), peteruiio (Expand Search), petrouiio (Expand Search), peruiio (Expand Search)
peters » peter (Expand Search), petersen (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (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 peroiv) OR (((petru OR peters) OR petruiio) OR (petr OR (petri OR peters)))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petroiv OR peroiv) OR (((petru OR peters) OR petruiio) OR (petr OR (petri OR peters)))) o.s.*".