Perhaps you should try some spelling variations:
peteruiv » peterdi (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petruiv » peteruiv (Expand Search), petriuiv (Expand Search), petruuiv (Expand Search)
petriiuiv » peteriiuiv (Expand Search), petriiiuiv (Expand Search), petruiiuiv (Expand Search)
petruuiiv » peteruuiiv (Expand Search), petriuuiiv (Expand Search), petruuuiiv (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 ((petruiv OR petriiuiv) OR peteruiv)) OR petruuiiv) OR petr) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriov OR ((petruiv OR petriiuiv) OR peteruiv)) OR petruuiiv) OR petr) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petriov OR ((petruiv OR petriiuiv) OR peteruiv)) OR petruuiiv) OR petr) o.s.*.