Perhaps you should try some spelling variations:
peteriiv » peterdi (Expand Search)
peru » petru (Expand Search), per (Expand Search)
petruv » peteruv (Expand Search), petruuv (Expand Search), petrouv (Expand Search)
petriv » peteriv (Expand Search), petruiv (Expand Search), petroiv (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petrouo » peterouo (Expand Search), petruouo (Expand Search), petroouo (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 (((petruv OR peteruv) OR (petriv OR peteriiv)) OR (((petri OR peru) OR petrouo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruv OR peteruv) OR (petriv OR peteriiv)) OR (((petri OR peru) OR petrouo) OR petr)) o.s.*".