Perhaps you should try some spelling variations:
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petruoi » peteruoi (Expand Search), petruuoi (Expand Search), petrouoi (Expand Search)
petriu » peteriu (Expand Search), petruiu (Expand Search), petroiu (Expand Search), petru (Expand Search), petris (Expand Search)
petruiu » peteruiu (Expand Search), petruuiu (Expand Search), petrouiu (Expand Search)
petroou » peteroou (Expand Search), petruoou (Expand Search), petrooou (Expand Search)
petrov » peterov (Expand Search), petruov (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 (((petri OR petruoi) OR (petriu OR petruiu)) OR (petroou OR petrov))) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop (petr OR (((petri OR petruoi) OR (petriu OR petruiu)) OR (petroou OR petrov))) _. s.*.