Talvez deva tentar algumas variações de ortografia:
current nerve » recurrent nerve (Expandir a Pesquisa), current curve (Expandir a Pesquisa), recurrent nerves (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), reserve system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
denham nerve » dental nerve (Expandir a Pesquisa), dental nerves (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
nerve than » nervosa than (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system di (Expandir a Pesquisa), system das (Expandir a Pesquisa)
than diet » than direct (Expandir a Pesquisa), than does (Expandir a Pesquisa), than deep (Expandir a Pesquisa)
case does » cases does (Expandir a Pesquisa), cause does (Expandir a Pesquisa), case goes (Expandir a Pesquisa)
j denham » d denham (Expandir a Pesquisa), a denham (Expandir a Pesquisa), l denham (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), ii cent (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( i cent nerve than diet ) OR ( i current nerve system dis ))) OR ( j denham nerve case does ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i cent nerve than diet ) OR ( i current nerve system dis ))) OR ( j denham nerve case does ))*.