Perhaps you should try some spelling variations:
petroiv » petrov (Expand Search), peteroiv (Expand Search), petrooiv (Expand Search), peroiv (Expand Search)
petruo » petro (Expand Search), peteruo (Expand Search), petrouo (Expand Search), peruo (Expand Search), pentruo (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search), peters (Expand Search)
petriiv » peteriiv (Expand Search), petroiiv (Expand Search), periiv (Expand Search)
petriio » peteriio (Expand Search), petroiio (Expand Search), periio (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petru » peteru (Expand Search), petrou (Expand Search), peru (Expand Search), pentru (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 petriiv) OR (((petruo OR peteri) OR petriio) OR ((petr OR petru) OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petroiv OR petriiv) OR (((petruo OR peteri) OR petriio) OR ((petr OR petru) OR petri))) o.s.*".