Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petruuuov » peteruuuov (Expand Search), petriuuuov (Expand Search), petruuuuov (Expand Search)
petruuoi » peteruuoi (Expand Search), petriuuoi (Expand Search), petruuuoi (Expand Search)
petruuiuoi » peteruuiuoi (Expand Search), petriuuiuoi (Expand Search), petruuuiuoi (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 (((peteruov OR petriov) OR petruuuov) OR (((petruuoi OR petruuiuoi) OR peteruo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peteruov OR petriov) OR petruuuov) OR (((petruuoi OR petruuiuoi) OR peteruo) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((peteruov OR petriov) OR petruuuov) OR (((petruuoi OR petruuiuoi) OR peteruo) OR petr)) o.s.*.