Perhaps you should try some spelling variations:
petr » peter (Expand Search), petru (Expand Search), per (Expand Search)
petro » petero (Expand Search), petruo (Expand Search), pero (Expand Search), petrov (Expand Search), petru (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), peri (Expand Search)
petroi » peteroi (Expand Search), petruoi (Expand Search), peroi (Expand Search), petrovi (Expand Search), petrui (Expand Search), petrov (Expand Search), petrow (Expand Search)
petruui » peteruui (Expand Search), petruuui (Expand Search), peruui (Expand Search)
pero » per (Expand Search), pro (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 (((peruw OR (petr OR petro)) o) OR (((pero OR petri) OR (petroi OR petruui)) _)). s.~".
• Adding a wildcard symbol may retrieve word variants: fop (((peruw OR (petr OR petro)) o) OR (((pero OR petri) OR (petroi OR petruui)) _)). s.*.