Perhaps you should try some spelling variations:
peteroiv » petrov (Expand Search), peterdi (Expand Search)
petroiv » peteroiv (Expand Search), petrioiv (Expand Search), petruoiv (Expand Search)
petruuiv » peteruuiv (Expand Search), petriuuiv (Expand Search), petruuuiv (Expand Search)
petrouo » peterouo (Expand Search), petriouo (Expand Search), petruouo (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petruoi (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 (((petroiv OR peteroiv) OR (petruuiv OR peteruuiv)) OR ((petrouo OR petroi) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petroiv OR peteroiv) OR (petruuiv OR peteruuiv)) OR ((petrouo OR petroi) OR petr)) o.s.*".