Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petroov » peteroov (Expand Search), petrioov (Expand Search), petruoov (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (Expand Search)
petriuuiuo » peteriuuiuo (Expand Search), petriiuuiuo (Expand Search), petruiuuiuo (Expand Search)
petroouiuo » peteroouiuo (Expand Search), petrioouiuo (Expand Search), petruoouiuo (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 peteruov) OR petroov) OR ((petrui OR (petriuuiuo OR petroouiuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruov OR peteruov) OR petroov) OR ((petrui OR (petriuuiuo OR petroouiuo)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petruov OR peteruov) OR petroov) OR ((petrui OR (petriuuiuo OR petroouiuo)) OR petr)) o.s.*.