Perhaps you should try some spelling variations:
peterouv » petrov (Expand Search)
petroouv » petrov (Expand Search), peteroouv (Expand Search), petrioouv (Expand Search), petruoouv (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petruoi (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (Expand Search)
petrouuo » peterouuo (Expand Search), petriouuo (Expand Search), petruouuo (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((peterouv OR petroouv) OR (((petroi OR peteri) OR (petruo OR petrouuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterouv OR petroouv) OR (((petroi OR peteri) OR (petruo OR petrouuo)) OR petr)) o.s.*".