Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petriov » peteriov (Expand Search), petruiov (Expand Search), petroiov (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petrooiio » peterooiio (Expand Search), petruooiio (Expand Search), petroooiio (Expand Search)
petrouuuiu » peterouuuiu (Expand Search), petruouuuiu (Expand Search), petroouuuiu (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (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 ((((petri OR peteruo) OR petrooiio) OR petrouuuiu) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteruov OR petriov) OR ((((petri OR peteruo) OR petrooiio) OR petrouuuiu) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peteruov OR petriov) OR ((((petri OR peteruo) OR petrooiio) OR petrouuuiu) OR petr)) o.s.*.