Perhaps you should try some spelling variations:
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petriuuov » peteriuuov (Expand Search), petriiuuov (Expand Search), petruiuuov (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
petriiuuo » peteriiuuo (Expand Search), petriiiuuo (Expand Search), petruiiuuo (Expand Search)
petriuiuo » peteriuiuo (Expand Search), petriiuiuo (Expand Search), petruiuiuo (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 ((((petruov OR petriuuov) OR peterdi) OR petruv) OR ((petriiuuo OR petriuiuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petruov OR petriuuov) OR peterdi) OR petruv) OR ((petriiuuo OR petriuiuo) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petruov OR petriuuov) OR peterdi) OR petruv) OR ((petriiuuo OR petriuiuo) OR petr)) o.s.*.