Perhaps you should try some spelling variations:
petriiiuv » peteriiiuv (Expand Search), petriiiiuv (Expand Search), petroiiiuv (Expand Search)
petriuiuv » peteriuiuv (Expand Search), petriiuiuv (Expand Search), petroiuiuv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petrooio » peterooio (Expand Search), petriooio (Expand Search), petroooio (Expand Search)
petriuo » peteriuo (Expand Search), petriiuo (Expand Search), petroiuo (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (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 ((petriiiuv OR petriuiuv) OR (((petru OR petrooio) OR petriuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiiuv OR petriuiuv) OR (((petru OR petrooio) OR petriuo) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriiiuv OR petriuiuv) OR (((petru OR petrooio) OR petriuo) OR petr)) o.s.*.