Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
peri » per (Expand Search)
petruv » peteruv (Expand Search), petruuv (Expand Search), petrouv (Expand Search)
petrou » peterou (Expand Search), petruou (Expand Search), petroou (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petrouo » peterouo (Expand Search), petruouo (Expand Search), petroouo (Expand Search)
petr » peter (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 ((peteruov OR petruv) OR ((((petrou OR peterio) OR (peri OR petri)) OR petrouo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteruov OR petruv) OR ((((petrou OR peterio) OR (peri OR petri)) OR petrouo) OR petr)) o.s.*".