Perhaps you should try some spelling variations:
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petroov (Expand Search), petro (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petroiu (Expand Search), petri (Expand Search), petris (Expand Search)
petroiu » peteroiu (Expand Search), petrioiu (Expand Search), petrooiu (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search), petri (Expand Search)
peteru » peter (Expand Search), peters (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 (peteri OR petrov)) OR ((((petriu OR petroiu) OR peteru) OR petru) OR peteru)) _. s.~".
• Adding a wildcard symbol may retrieve word variants: fop ((petr OR (peteri OR petrov)) OR ((((petriu OR petroiu) OR peteru) OR petru) OR peteru)) _. s.*.