Perhaps you should try some spelling variations:
petriuv » peteriuv (Expand Search), petriiuv (Expand Search), petruiuv (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petriiou » peteriiou (Expand Search), petriiiou (Expand Search), petruiiou (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (Expand Search)
petriuuuo » peteriuuuo (Expand Search), petriiuuuo (Expand Search), petruiuuuo (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

Try widening your search to All Fields.

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 (((petriu OR petriiou) OR (petruo OR petriuuuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriuv OR (((petriu OR petriiou) OR (petruo OR petriuuuo)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petriuv OR (((petriu OR petriiou) OR (petruo OR petriuuuo)) OR petr)) o.s.*.