Perhaps you should try some spelling variations:
petriv » peteriv (Expand Search), petriiv (Expand Search), petruiv (Expand Search)
petriiiv » peteriiiv (Expand Search), petriiiiv (Expand Search), petruiiiv (Expand Search)
petruoiiov » peteruoiiov (Expand Search), petriuoiiov (Expand Search), petruuoiiov (Expand Search)
petriiiuv » peteriiiuv (Expand Search), petriiiiuv (Expand Search), petruiiiuv (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (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 ((((petriv OR petriiiv) OR petruoiiov) OR petriiiuv) OR ((petrou OR petruo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriv OR petriiiv) OR petruoiiov) OR petriiiuv) OR ((petrou OR petruo) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriv OR petriiiv) OR petruoiiov) OR petriiiuv) OR ((petrou OR petruo) OR petr)) o.s.*.