Perhaps you should try some spelling variations:
peterouv » petrov (Expand Search)
petrouoouv » peterouoouv (Expand Search), petruouoouv (Expand Search), petroouoouv (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petruo » peteruo (Expand Search), petruuo (Expand Search), petrouo (Expand Search)
petrouuuo » peterouuuo (Expand Search), petruouuuo (Expand Search), petroouuuo (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (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 (petrouoouv OR peteruoouv)) OR ((petri OR (petruo OR petrouuuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterouv OR (petrouoouv OR peteruoouv)) OR ((petri OR (petruo OR petrouuuo)) OR petr)) o.s.*".