Perhaps you should try some spelling variations:
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petrooi (Expand Search), petri (Expand Search), petro (Expand Search), petrow (Expand Search)
petruoi » peteruoi (Expand Search), petriuoi (Expand Search), petrouoi (Expand Search), pentruoi (Expand Search), petrioi (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
petrouiu » peterouiu (Expand Search), petriouiu (Expand Search), petroouiu (Expand Search)
petroou » peteroou (Expand Search), petrioou (Expand Search), petrooou (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petroov (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 (((petroi OR petruoi) OR (petru OR petrouiu)) OR (petroou OR petrov))) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop (petr OR (((petroi OR petruoi) OR (petru OR petrouiu)) OR (petroou OR petrov))) _. s.*.