Perhaps you should try some spelling variations:
petriuuv » peteriuuv (Expand Search), petriiuuv (Expand Search), petruiuuv (Expand Search)
petriiiiuv » peteriiiiuv (Expand Search), petriiiiiuv (Expand Search), petruiiiiuv (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petruiuo (Expand Search)
petriiio » peteriiio (Expand Search), petriiiio (Expand Search), petruiiio (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 petriiiiuv) OR (((petrov OR (petriuo OR peteruiuo)) OR petriiio) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuuv OR petriiiiuv) OR (((petrov OR (petriuo OR peteruiuo)) OR petriiio) OR petr)) o.s.*".