Perhaps you should try some spelling variations:
peri » petri (Expand Search), per (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petrouov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petrui » peterui (Expand Search), petriui (Expand Search), petroui (Expand Search)
petruio » peteruio (Expand Search), petriuio (Expand Search), petrouio (Expand Search)
petruiu » peteruiu (Expand Search), petriuiu (Expand Search), petrouiu (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 (petruov OR ((((petru OR (peri OR petrui)) OR petruio) OR petruiu) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruov OR ((((petru OR (peri OR petrui)) OR petruio) OR petruiu) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petruov OR ((((petru OR (peri OR petrui)) OR petruio) OR petruiu) OR petr)) o.s.*.