Perhaps you should try some spelling variations:
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petruuv » pentruuv (Expand Search), peteruuv (Expand Search), petrouuv (Expand Search), peruuv (Expand Search)
petruo » pentruo (Expand Search), peteruo (Expand Search), petrouo (Expand Search), peruo (Expand Search), petro (Expand Search)
petruuo » pentruuo (Expand Search), peteruuo (Expand Search), petrouuo (Expand Search), peruuo (Expand Search)
petrv » petrov (Expand Search), petro (Expand Search), petra (Expand Search), peterv (Expand Search), perv (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (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 petruuv) OR peteriuov) OR (petrv OR petr)) OR ((petruo OR petruuo) OR petri)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petru OR petruuv) OR peteriuov) OR (petrv OR petr)) OR ((petruo OR petruuo) OR petri)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petru OR petruuv) OR peteriuov) OR (petrv OR petr)) OR ((petruo OR petruuo) OR petri)) o.s.*.