Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (Expand Search)
petriiuio » peteriiuio (Expand Search), petriiiuio (Expand Search), petruiiuio (Expand Search)
petriiiuio » peteriiiuio (Expand Search), petriiiiuio (Expand Search), petruiiiuio (Expand Search)
petriio » peteriio (Expand Search), petriiio (Expand Search), petruiio (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 ((peterov OR peteruov) OR ((petruo OR ((petriiuio OR petriiiuio) OR petriio)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterov OR peteruov) OR ((petruo OR ((petriiuio OR petriiiuio) OR petriio)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peterov OR peteruov) OR ((petruo OR ((petriiuio OR petriiiuio) OR petriio)) OR petr)) o.s.*.