Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriiov » petrov (Expand Search), peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petruiiiov » peteruiiiov (Expand Search), petriuiiiov (Expand Search), petruuiiiov (Expand Search)
petriui » peteriui (Expand Search), petriiui (Expand Search), petruiui (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 petriov) OR (petriiov OR petruiiiov)) OR ((peterov OR petriui) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((peteriov OR petriov) OR (petriiov OR petruiiiov)) OR ((peterov OR petriui) OR petr)) o.s.*".