Perhaps you should try some spelling variations:
petru » pentru (Expand Search), petrou (Expand Search), peru (Expand Search)
petruis » pentruis (Expand Search), petrouis (Expand Search), peruis (Expand Search)
petrio » petro (Expand Search), petroio (Expand Search), perio (Expand Search)
petris » petrois (Expand Search), peris (Expand Search)
petrois » petroois (Expand Search), perois (Expand Search)
petr » petro (Expand Search), per (Expand Search)
petri » petroi (Expand Search), peri (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 (petru OR ((petrio OR ((petris OR petrois) OR petruis)) OR ((petr OR petri) OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petru OR ((petrio OR ((petris OR petrois) OR petruis)) OR ((petr OR petri) OR peter))) o.s.*".