Perhaps you should try some spelling variations:
petruo » petru (Expand Search), petro (Expand Search), petruuo (Expand Search), petrouo (Expand Search), peruo (Expand Search)
petri » petrui (Expand Search), petroi (Expand Search), peri (Expand Search)
petrouiiv » petruouiiv (Expand Search), petroouiiv (Expand Search), perouiiv (Expand Search)
petris » petruis (Expand Search), petrois (Expand Search), peris (Expand Search)
petruiu » petruuiu (Expand Search), petrouiu (Expand Search), peruiu (Expand Search)
petr » petru (Expand Search), petro (Expand Search), per (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 ((petri OR petrouiiv) OR ((petruo OR (petris OR petruiu)) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petri OR petrouiiv) OR ((petruo OR (petris OR petruiu)) OR (petr OR peter))) o.s.*".