Perhaps you should try some spelling variations:
petriuuv » peteriuuv (Expand Search), petriiuuv (Expand Search), petruiuuv (Expand Search)
petruiuuuv » peteruiuuuv (Expand Search), petriuiuuuv (Expand Search), petruuiuuuv (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petruiuo (Expand Search)
petruuo » peteruuo (Expand Search), petriuuo (Expand Search), petruuuo (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 ((petriuuv OR petruiuuuv) OR ((petrov OR ((petriuo OR petruuo) OR peteruo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuuv OR petruiuuuv) OR ((petrov OR ((petriuo OR petruuo) OR peteruo)) OR petr)) o.s.*".