Perhaps you should try some spelling variations:
petrv » petrov (Expand Search), petru (Expand Search), petro (Expand Search), peterv (Expand Search), petruv (Expand Search)
petriov » petrov (Expand Search), peteriov (Expand Search), petruiov (Expand Search), petroiov (Expand Search)
petrouv » petrov (Expand Search), petruv (Expand Search), petrovv (Expand Search), peterouv (Expand Search), petruouv (Expand Search), petroouv (Expand Search)
peteru » peter (Expand Search), petru (Expand Search), peters (Expand Search)
petrou » petru (Expand Search), petro (Expand Search), petrov (Expand Search), peterou (Expand Search), petruou (Expand Search), petroou (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (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 (petrv OR ((petriov OR (peruv OR petrouv)) OR ((peteru OR petrou) OR (petr OR petri)))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petrv OR ((petriov OR (peruv OR petrouv)) OR ((peteru OR petrou) OR (petr OR petri)))) o.s.*".