Perhaps you should try some spelling variations:
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)
petrov » peterov (Expand Search), petroov (Expand Search), perov (Expand Search), petro (Expand Search)
petruov » peteruov (Expand Search), petrouov (Expand Search), peruov (Expand Search), pentruov (Expand Search)
petruuov » peteruuov (Expand Search), petrouuov (Expand Search), peruuov (Expand Search), pentruuov (Expand Search)
petrouuov » peterouuov (Expand Search), petroouuov (Expand Search), perouuov (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 (((petr OR petru) OR petri) OR (petrov OR (petruov OR (petruuov OR petrouuov)))) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop (((petr OR petru) OR petri) OR (petrov OR (petruov OR (petruuov OR petrouuov)))) _. s.*.