Perhaps you should try some spelling variations:
petriiov » petrov (Expand Search), peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petruiuo (Expand Search)
petriiiuo » peteriiiuo (Expand Search), petriiiiuo (Expand Search), petruiiiuo (Expand Search)
petruiiiuo » peteruiiiuo (Expand Search), petriuiiiuo (Expand Search), petruuiiiuo (Expand Search)
petriuuo » peteriuuo (Expand Search), petriiuuo (Expand Search), petruiuuo (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 ((petriiov OR peterov) OR (((petriuo OR (petriiiuo OR petruiiiuo)) OR petriuuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiov OR peterov) OR (((petriuo OR (petriiiuo OR petruiiiuo)) OR petriuuo) OR petr)) o.s.*".