Perhaps you should try some spelling variations:
petris » petri (Expand Search), petriis (Expand Search), petruis (Expand Search), petrois (Expand Search)
petriis » petriiis (Expand Search), petruiis (Expand Search), petroiis (Expand Search)
petruouiiv » petriuouiiv (Expand Search), petruuouiiv (Expand Search), petrououiiv (Expand Search)
petruuo » petriuuo (Expand Search), petruuuo (Expand Search), petrouuo (Expand Search)
petruiu » petriuiu (Expand Search), petruuiu (Expand Search), petrouiu (Expand Search)
petr » petri (Expand Search), petru (Expand Search), petro (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop (((petris OR petriis) OR petruouiiv) OR ((petruuo OR petruiu) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petris OR petriis) OR petruouiiv) OR ((petruuo OR petruiu) OR (petr OR peter))) o.s.*".