Perhaps you should try some spelling variations:
petroiov » petrov (Expand Search), peteroiov (Expand Search), petrioiov (Expand Search), petruoiov (Expand Search)
petruuouiv » peteruuouiv (Expand Search), petriuuouiv (Expand Search), petruuuouiv (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petruiuv » peteruiuv (Expand Search), petriuiuv (Expand Search), petruuiuv (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petruui (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 ((((peteruouiv OR petruuouiv) OR (petriov OR petroiov)) OR petruiuv) OR (petrui OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((peteruouiv OR petruuouiv) OR (petriov OR petroiov)) OR petruiuv) OR (petrui OR petr)) o.s.*".