Perhaps you should try some spelling variations:
petrouov » petrov (Expand Search), peterouov (Expand Search), petriouov (Expand Search), petruouov (Expand Search)
peteriov » petrov (Expand Search)
petruuuv » peteruuuv (Expand Search), petriuuuv (Expand Search), petruuuuv (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (Expand Search)
petrouuo » peterouuo (Expand Search), petriouuo (Expand Search), petruouuo (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 (((petrouov OR peteriov) OR petruuuv) OR ((petrui OR (peteruo OR petrouuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petrouov OR peteriov) OR petruuuv) OR ((petrui OR (peteruo OR petrouuo)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petrouov OR peteriov) OR petruuuv) OR ((petrui OR (peteruo OR petrouuo)) OR petr)) o.s.*.