Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petroiov » petrov (Expand Search), peteroiov (Expand Search), petrioiov (Expand Search), petrooiov (Expand Search)
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petroiiv (Expand Search)
petroouiiv » peteroouiiv (Expand Search), petrioouiiv (Expand Search), petrooouiiv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petr » peter (Expand Search), petri (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 ((petriiv OR petroouiiv) OR ((petru OR ((peteriov OR peteriiov) OR petroiov)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiv OR petroouiiv) OR ((petru OR ((peteriov OR peteriiov) OR petroiov)) OR petr)) o.s.*".