Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
peri » petri (Expand Search), per (Expand Search)
periiuo » petriiuo (Expand Search), periuo (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petrouv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petroou (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petroiuo (Expand Search)
petr » peter (Expand Search), petri (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 ((peteruov OR petruv) OR ((((petru OR petrou) OR peri) OR (petriuo OR periiuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteruov OR petruv) OR ((((petru OR petrou) OR peri) OR (petriuo OR periiuo)) OR petr)) o.s.*".