Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
current drive » current driven (Expandir a Pesquisa), current during (Expandir a Pesquisa), current drug (Expandir a Pesquisa)
deml nerve » dermal nerve (Expandir a Pesquisa), cell nerve (Expandir a Pesquisa), dual 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)
system di » system de (Expandir a Pesquisa), system d (Expandir a Pesquisa), system dias (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa)
case dti » case data (Expandir a Pesquisa), based dti (Expandir a Pesquisa), case due (Expandir a Pesquisa)
j deml » j dell (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 central nerve can diet ) OR ( i current drive system di ))) OR ( j deml nerve case dti ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i central nerve can diet ) OR ( i current drive system di ))) OR ( j deml nerve case dti ))*.