Perhaps you should try some spelling variations:
petriov » peteriov (Expand Search), petruiov (Expand Search), petroiov (Expand Search)
petriuiov » peteriuiov (Expand Search), petruiuiov (Expand Search), petroiuiov (Expand Search)
petriio » peteriio (Expand Search), petruiio (Expand Search), petroiio (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petruiuo » peteruiuo (Expand Search), petruuiuo (Expand Search), petrouiuo (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 ((petriov OR petriuiov) OR (((petriio OR petri) OR petruiuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR petriuiov) OR (((petriio OR petri) OR petruiuo) OR petr)) o.s.*".