Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriv » peteriv (Expand Search), petriiv (Expand Search), petruiv (Expand Search)
petriuuiiv » peteriuuiiv (Expand Search), petriiuuiiv (Expand Search), petruiuuiiv (Expand Search)
petriio » peteriio (Expand Search), petriiio (Expand Search), petruiio (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 ((peteriov OR (petriv OR petriuuiiv)) OR ((petriio OR (petruov OR petruov)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteriov OR (petriv OR petriuuiiv)) OR ((petriio OR (petruov OR petruov)) OR petr)) o.s.*".