Perhaps you should try some spelling variations:
periov » petriov (Expand Search), perov (Expand Search)
peri » petri (Expand Search), per (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petrouo » peterouo (Expand Search), petriouo (Expand Search), petroouo (Expand Search)
petriouo » peteriouo (Expand Search), petriiouo (Expand Search), petroiouo (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petroui (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 (periov OR ((((petru OR peteru) OR (petrouo OR petriouo)) OR (peri OR petrui)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (periov OR ((((petru OR peteru) OR (petrouo OR petriouo)) OR (peri OR petrui)) OR petr)) o.s.*".