Perhaps you should try some spelling variations:
peteruui » peterdi (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petroiiov » peteroiiov (Expand Search), petrioiiov (Expand Search), petruoiiov (Expand Search)
petroiv » peteroiv (Expand Search), petrioiv (Expand Search), petruoiv (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 ((((peteriov OR petrov) OR petroiiov) OR petroiv) OR ((peteruui OR petroi) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peteriov OR petrov) OR petroiiov) OR petroiv) OR ((peteruui OR petroi) OR petr)) o.s.*".