Talvez deva tentar algumas variações de ortografia:
direct neural » direct neuronal (Expandir a Pesquisa), direct peroral (Expandir a Pesquisa), direct oral (Expandir a Pesquisa)
curran nerve » current nerve (Expandir a Pesquisa), curran george (Expandir a Pesquisa), human nerve (Expandir a Pesquisa)
neural phase » neural plate (Expandir a Pesquisa), neural probe (Expandir a Pesquisa), spiral phase (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve ct (Expandir a Pesquisa), nerve cut (Expandir a Pesquisa)
phase due » phase de (Expandir a Pesquisa), phase dual (Expandir a Pesquisa), phase drug (Expandir a Pesquisa)
j curran » j currie (Expandir a Pesquisa)
j direct » j director (Expandir a Pesquisa), nhj direct (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat bias (Expandir a Pesquisa)
case d » case de (Expandir a Pesquisa), case 2 (Expandir a Pesquisa), case 1 (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": "(((( _ rat nerve case d ) OR ( j curran nerve cat dis ))) OR ( j direct neural phase due ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ rat nerve case d ) OR ( j curran nerve cat dis ))) OR ( j direct neural phase due ))*.