Perhaps you should try some spelling variations:
petruiiiv » pentruiiiv (Expand Search), peteruiiiv (Expand Search), petrouiiiv (Expand Search), peruiiiv (Expand Search)
petruuiiv » pentruuiiv (Expand Search), peteruuiiv (Expand Search), petrouuiiv (Expand Search), peruuiiv (Expand Search)
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petris » peteris (Expand Search), petrois (Expand Search), peris (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (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 ((((petruiiiv OR petruiiiv) OR petruuiiv) OR petru) OR (petris OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petruiiiv OR petruiiiv) OR petruuiiv) OR petru) OR (petris OR (petr OR petri))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petruiiiv OR petruiiiv) OR petruuiiv) OR petru) OR (petris OR (petr OR petri))) o.s.*.