Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petriio » peteriio (Expand Search), petriiio (Expand Search), petruiio (Expand Search)
petruiiio » peteruiiio (Expand Search), petriuiiio (Expand Search), petruuiiio (Expand Search)
petruio » peteruio (Expand Search), petriuio (Expand Search), petruuio (Expand Search)
petriuuio » peteriuuio (Expand Search), petriiuuio (Expand Search), petruiuuio (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 petriov) OR (((petriio OR petruiiio) OR (petruio OR petriuuio)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteriov OR petriov) OR (((petriio OR petruiiio) OR (petruio OR petriuuio)) OR petr)) o.s.*".