Perhaps you should try some spelling variations:
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (Expand Search)
petruoi » peteruoi (Expand Search), petrouoi (Expand Search), peruoi (Expand Search), pentruoi (Expand Search)
petru » peteru (Expand Search), petrou (Expand Search), peru (Expand Search), pentru (Expand Search)
petrouiu » peterouiu (Expand Search), petroouiu (Expand Search), perouiu (Expand Search)
petroou » peteroou (Expand Search), petrooou (Expand Search), peroou (Expand Search)
petrov » peterov (Expand Search), petroov (Expand Search), perov (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 (petr OR (((petri OR petruoi) OR (petru OR petrouiu)) OR (petroou OR petrov))) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop (petr OR (((petri OR petruoi) OR (petru OR petrouiu)) OR (petroou OR petrov))) _. s.*.