Perhaps you should try some spelling variations:
petris » petri (Expand Search), petriis (Expand Search), petruis (Expand Search), petrois (Expand Search)
petriuv » petriiuv (Expand Search), petruiuv (Expand Search), petroiuv (Expand Search)
petriio » petriiio (Expand Search), petruiio (Expand Search), petroiio (Expand Search)
petriois » petriiois (Expand Search), petruiois (Expand Search), petroiois (Expand Search)
petruuis » petriuuis (Expand Search), petruuuis (Expand Search), petrouuis (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 (petriuv OR ((petriio OR ((petris OR petriois) OR petruuis)) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriuv OR ((petriio OR ((petris OR petriois) OR petruuis)) OR (petr OR peter))) o.s.*".