Perhaps you should try some spelling variations:
petriv » petri (Expand Search), petris (Expand Search), petrov (Expand Search)
petruov » petrov (Expand Search), pentruov (Expand Search), petriov (Expand Search)
peterov » petrov (Expand Search)
pero » petro (Expand Search), per (Expand Search), pro (Expand Search)
petru » pentru (Expand Search), petri (Expand Search)
petruio » pentruio (Expand Search), petriio (Expand Search)
petruo » pentruo (Expand Search), petrio (Expand Search), petro (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriv OR petruov) OR peterov) OR ((((pero OR petru) OR petruio) OR petruo) OR peter)) o.s.~".
• Adding a wildcard symbol may retrieve word variants: fop (((petriv OR petruov) OR peterov) OR ((((pero OR petru) OR petruio) OR petruo) OR peter)) o.s.*.