Perhaps you should try some spelling variations:
peteroov » petrov (Expand Search)
petrioiv » petrov (Expand Search), peterioiv (Expand Search), petriioiv (Expand Search), petruioiv (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
petrouv » peterouv (Expand Search), petriouv (Expand Search), petruouv (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (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 ((((peteroov OR petrioiv) OR (petruv OR petrouv)) OR petruov) OR (peteru OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peteroov OR petrioiv) OR (petruv OR petrouv)) OR petruov) OR (peteru OR petr)) o.s.*".