Perhaps you should try some spelling variations:
perov » petrov (Expand Search)
petriv » peteriv (Expand Search), petriiv (Expand Search), petroiv (Expand Search)
petrouv » peterouv (Expand Search), petriouv (Expand Search), petroouv (Expand Search)
petrv » peterv (Expand Search), petriv (Expand Search), petrov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petriiio » peteriiio (Expand Search), petriiiio (Expand Search), petroiiio (Expand Search)
petr » peter (Expand Search), petri (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 ((((petriv OR perov) OR petrouv) OR petrv) OR (((peteri OR petru) OR petriiio) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriv OR perov) OR petrouv) OR petrv) OR (((peteri OR petru) OR petriiio) OR petr)) o.s.*".