Perhaps you should try some spelling variations:
petriw » petris (Expand Search), petrow (Expand Search), petruiw (Expand Search), petroiw (Expand Search), periw (Expand Search)
petruvw » petruuvw (Expand Search), petrouvw (Expand Search), peruvw (Expand Search)
petr » petru (Expand Search), petro (Expand Search), per (Expand Search)
petri » petrui (Expand Search), petroi (Expand Search), peri (Expand Search)
peterivw » peterdivw (Expand Search), petersvw (Expand Search)
peteri » peterdi (Expand Search), peters (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 (((petriw OR (peterivw OR petruvw)) o) OR (((petr OR peter) OR (peteri OR petri)) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petriw OR (peterivw OR petruvw)) o) OR (((petr OR peter) OR (peteri OR petri)) _)). s.*".