Perhaps you should try some spelling variations:
peru » petru (Expand Search), per (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petruiuo (Expand Search)
petrouiuo » peterouiuo (Expand Search), petriouiuo (Expand Search), petruouiuo (Expand Search)
petriuuiuo » peteriuuiuo (Expand Search), petriiuuiuo (Expand Search), petruiuuiuo (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 (((petriu OR peru) OR (petriuo OR (petrouiuo OR petriuuiuo))) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruov OR (((petriu OR peru) OR (petriuo OR (petrouiuo OR petriuuiuo))) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petruov OR (((petriu OR peru) OR (petriuo OR (petrouiuo OR petriuuiuo))) OR petr)) o.s.*.