Perhaps you should try some spelling variations:
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petriuiov » peteriuiov (Expand Search), petriiuiov (Expand Search), petruiuiov (Expand Search)
petruuiov » peteruuiov (Expand Search), petriuuiov (Expand Search), petruuuiov (Expand Search)
petriuuiov » peteriuuiov (Expand Search), petriiuuiov (Expand Search), petruiuuiov (Expand Search)
petruiuiv » peteruiuiv (Expand Search), petriuiuiv (Expand Search), petruuiuiv (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

Try widening your search to All Fields.

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 (petriuiov OR petruuiov)) OR petriuuiov) OR petruiuiv) OR (petero OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriov OR (petriuiov OR petruuiov)) OR petriuuiov) OR petruiuiv) OR (petero OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriov OR (petriuiov OR petruuiov)) OR petriuuiov) OR petruiuiv) OR (petero OR petr)) o.s.*.