Perhaps you should try some spelling variations:
petroi » petri (Expand Search), petro (Expand Search), petrov (Expand Search), petrioi (Expand Search), petrooi (Expand Search), peroi (Expand Search)
petrv » petrov (Expand Search), petri (Expand Search), petro (Expand Search), petriv (Expand Search), perv (Expand Search)
petru » pentru (Expand Search), petri (Expand Search), petriu (Expand Search), petrou (Expand Search), peru (Expand Search)
petruois » pentruois (Expand Search), petriois (Expand Search), petriuois (Expand Search), petrouois (Expand Search), peruois (Expand Search)
petris » petri (Expand Search), petriis (Expand Search), petrois (Expand Search), peris (Expand Search)
petriiuv » petriiiuv (Expand Search), petroiiuv (Expand Search), periiuv (Expand Search)
petr » petri (Expand Search), 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 ((petroi OR (petrv OR (petru OR petriiuv))) OR ((petris OR petruois) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petroi OR (petrv OR (petru OR petriiuv))) OR ((petris OR petruois) OR (petr OR peter))) o.s.*".