Perhaps you should try some spelling variations:
petrouov » petrov (Expand Search), peterouov (Expand Search), petriouov (Expand Search), petruouov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petriouov » peteriouov (Expand Search), petriiouov (Expand Search), petruiouov (Expand Search)
petriuuo » peteriuuo (Expand Search), petriiuuo (Expand Search), petruiuuo (Expand Search)
petruioi » peteruioi (Expand Search), petriuioi (Expand Search), petruuioi (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 ((petrouov OR petriouov) OR petriov)) OR ((petriuuo OR petruioi) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR ((petrouov OR petriouov) OR petriov)) OR ((petriuuo OR petruioi) OR petr)) o.s.*".