Perhaps you should try some spelling variations:
petriouv » petrov (Expand Search), peteriouv (Expand Search), petriiouv (Expand Search), petruiouv (Expand Search)
petrooov » petrov (Expand Search), peterooov (Expand Search), petriooov (Expand Search), petruooov (Expand Search)
petriuouv » peteriuouv (Expand Search), petriiuouv (Expand Search), petruiuouv (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petruuuo » peteruuuo (Expand Search), petriuuuo (Expand Search), petruuuuo (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 ((peteruiiv OR (petriouv OR petriuouv)) OR (((petriu OR petrooov) OR petruuuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteruiiv OR (petriouv OR petriuouv)) OR (((petriu OR petrooov) OR petruuuo) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peteruiiv OR (petriouv OR petriuouv)) OR (((petriu OR petrooov) OR petruuuo) OR petr)) o.s.*.