Perhaps you should try some spelling variations:
petrouv » petrov (Expand Search), peterouv (Expand Search), petroouv (Expand Search), perouv (Expand Search)
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petroooouv » peteroooouv (Expand Search), petrooooouv (Expand Search), peroooouv (Expand Search)
petroiu » peteroiu (Expand Search), petrooiu (Expand Search), peroiu (Expand Search)
petrooiuo » peterooiuo (Expand Search), petroooiuo (Expand Search), perooiuo (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 ((petrouv OR petroooouv) OR (((petru OR petroiu) OR petrooiuo) OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petrouv OR petroooouv) OR (((petru OR petroiu) OR petrooiuo) OR (petr OR petri))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petrouv OR petroooouv) OR (((petru OR petroiu) OR petrooiuo) OR (petr OR petri))) o.s.*.