Perhaps you should try some spelling variations:
petrio » petris (Expand Search), petro (Expand Search), peterio (Expand Search), petruio (Expand Search), petroio (Expand Search)
petruiuov » peteruiuov (Expand Search), petruuiuov (Expand Search), petrouiuov (Expand Search)
petruuiu » peteruuiu (Expand Search), petruuuiu (Expand Search), petrouuiu (Expand Search)
petriiu » peteriiu (Expand Search), petruiiu (Expand Search), petroiiu (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (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 (petruiuov OR ((petruuiu OR petriiu) OR ((petrio OR peterio) OR (petr OR petri)))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruiuov OR ((petruuiu OR petriiu) OR ((petrio OR peterio) OR (petr OR petri)))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petruiuov OR ((petruuiu OR petriiu) OR ((petrio OR peterio) OR (petr OR petri)))) o.s.*.