Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petruoiov » peteruoiov (Expand Search), petriuoiov (Expand Search), petruuoiov (Expand Search)
petruuoiov » peteruuoiov (Expand Search), petriuuoiov (Expand Search), petruuuoiov (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 (((petriov OR peteriov) OR (petruoiov OR petruuoiov)) OR ((peteroi OR petruov) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriov OR peteriov) OR (petruoiov OR petruuoiov)) OR ((peteroi OR petruov) OR petr)) o.s.*".