Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petrovu » petrov (Expand Search), peterovu (Expand Search), petroovu (Expand Search), perovu (Expand Search)
petroo » petro (Expand Search), petrov (Expand Search), petrow (Expand Search), peteroo (Expand Search), petrooo (Expand Search), peroo (Expand Search)
petroio » peteroio (Expand Search), petrooio (Expand Search), peroio (Expand Search)
petrouo » peterouo (Expand Search), petroouo (Expand Search), perouo (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 (peterov OR ((((petru OR petrovu) OR petroio) OR (petrouo OR petroo)) OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (peterov OR ((((petru OR petrovu) OR petroio) OR (petrouo OR petroo)) OR (petr OR petri))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (peterov OR ((((petru OR petrovu) OR petroio) OR (petrouo OR petroo)) OR (petr OR petri))) o.s.*.