Perhaps you should try some spelling variations:
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search), petrov (Expand Search)
petruiu » peteruiu (Expand Search), petriuiu (Expand Search), petruuiu (Expand Search), petriu (Expand Search), petruu (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (Expand Search), petri (Expand Search), petru (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (Expand Search), petru (Expand Search), petro (Expand Search), petrov (Expand Search)
peterivw » peterdivw (Expand Search), petervw (Expand Search), petrivw (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search), petri (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((peterivw o) OR (((petr OR petruov) OR ((petruiu OR (peteri OR petrui)) OR petrou)) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterivw o) OR (((petr OR petruov) OR ((petruiu OR (peteri OR petrui)) OR petrou)) _)). s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peterivw o) OR (((petr OR petruov) OR ((petruiu OR (peteri OR petrui)) OR petrou)) _)). s.*.