Perhaps you should try some spelling variations:
peterioi » peterdi (Expand Search)
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petruiuov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petriiiioi » peteriiiioi (Expand Search), petriiiiioi (Expand Search), petruiiiioi (Expand Search)
petruuiuov » peteruuiuov (Expand Search), petriuuiuov (Expand Search), petruuuiuov (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 petriov) OR (((peterioi OR petriiiioi) OR (petriuov OR petruuiuov)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR petriov) OR (((peterioi OR petriiiioi) OR (petriuov OR petruuiuov)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriov OR petriov) OR (((peterioi OR petriiiioi) OR (petriuov OR petruuiuov)) OR petr)) o.s.*.