Perhaps you should try some spelling variations:
petriiiv » peteriiiv (Expand Search), petriiiiv (Expand Search), petruiiiv (Expand Search)
petriuiv » peteriuiv (Expand Search), petriiuiv (Expand Search), petruiuiv (Expand Search)
petruuiov » peteruuiov (Expand Search), petriuuiov (Expand Search), petruuuiov (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (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 (((petriiiv OR petriuiv) OR (petruuiov OR petruov)) OR ((petrou OR peterdi) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriiiv OR petriuiv) OR (petruuiov OR petruov)) OR ((petrou OR peterdi) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petriiiv OR petriuiv) OR (petruuiov OR petruov)) OR ((petrou OR peterdi) OR petr)) o.s.*.