Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
central nerve » central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa), femoral nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa), hemi central (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
can diets » cane diets (Expandir a Pesquisa), can diet (Expandir a Pesquisa), corn diets (Expandir a Pesquisa)
system di » system de (Expandir a Pesquisa), system d (Expandir a Pesquisa), system dias (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
i bent » i benth (Expandir a Pesquisa), i benet (Expandir a Pesquisa), i bento (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 bent nerve case dis ) OR ( i central nerve can diets ))) OR ( _ ventral nerve system di ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i bent nerve case dis ) OR ( i central nerve can diets ))) OR ( _ ventral nerve system di ))*.