Perhaps you should try some spelling variations:
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petruuo » peteruuo (Expand Search), petriuuo (Expand Search), petruuuo (Expand Search)
petruuui » peteruuui (Expand Search), petriuuui (Expand Search), petruuuui (Expand Search)
petriuuui » peteriuuui (Expand Search), petriiuuui (Expand Search), petruiuuui (Expand Search)
petriiuuui » peteriiuuui (Expand Search), petriiiuuui (Expand Search), petruiiuuui (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 (petriov OR (((petruuo OR peteruo) OR (petruuui OR (petriuuui OR petriiuuui))) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriov OR (((petruuo OR peteruo) OR (petruuui OR (petriuuui OR petriiuuui))) OR petr)) o.s.*".