Perhaps you should try some spelling variations:
petru » pentru (Expand Search), petri (Expand Search), peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petruov » pentruov (Expand Search), petriov (Expand Search), petrov (Expand Search), peteruov (Expand Search), petriuov (Expand Search), petrouov (Expand Search)
petriui » peteriui (Expand Search), petriiui (Expand Search), petroiui (Expand Search)
petrioiuo » peterioiuo (Expand Search), petriioiuo (Expand Search), petroioiuo (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 ((petru OR petruov) OR (((petriui OR petriui) OR petrioiuo) OR (petr OR petriui))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petru OR petruov) OR (((petriui OR petriui) OR petrioiuo) OR (petr OR petriui))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petru OR petruov) OR (((petriui OR petriui) OR petrioiuo) OR (petr OR petriui))) o.s.*.