Perhaps you should try some spelling variations:
petruuuv » pentruuuv (Expand Search), petrouuuv (Expand Search), peruuuv (Expand Search)
petru » pentru (Expand Search), petrou (Expand Search), peru (Expand Search)
pero » petro (Expand Search), per (Expand Search), pro (Expand Search)
peteri » peterdi (Expand Search), peters (Expand Search)
petriiuv » petroiiuv (Expand Search), periiuv (Expand Search)
petri » petroi (Expand Search), peri (Expand Search)
petr » petro (Expand Search), per (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((petriiuv OR petruuuv) OR (((petru OR pero) OR (peteri OR petri)) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiuv OR petruuuv) OR (((petru OR pero) OR (peteri OR petri)) OR (petr OR peter))) o.s.*".