Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriuiov » peteriuiov (Expand Search), petriiuiov (Expand Search), petruiuiov (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (Expand Search)
petruoi » peteruoi (Expand Search), petriuoi (Expand Search), petruuoi (Expand Search)
petriouov » peteriouov (Expand Search), petriiouov (Expand Search), petruiouov (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 ((petriuiov OR peteriov) OR (((petrui OR (peteroi OR petruoi)) OR petriouov) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuiov OR peteriov) OR (((petrui OR (peteroi OR petruoi)) OR petriouov) OR petr)) o.s.*".