Talvez deva tentar algumas variações de ortografia:
current curve » current survey (Expandir a Pesquisa), current care (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
curve systems » survey systems (Expandir a Pesquisa), nerve systems (Expandir a Pesquisa), cave systems (Expandir a Pesquisa)
ventral nerve » femoral nerve (Expandir a Pesquisa)
systems der » systems de (Expandir a Pesquisa), systems under (Expandir a Pesquisa), systems does (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j ventral » _ ventral (Expandir a Pesquisa), a ventral (Expandir a Pesquisa), 2 ventral (Expandir a Pesquisa)
nerve age » nerve agent (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve area (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa)
age disc » aged disc (Expandir a Pesquisa), large disc (Expandir a Pesquisa), age discus (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 beta nerve can diet ) OR ( i current curve systems der ))) OR ( j ventral nerve age disc ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i beta nerve can diet ) OR ( i current curve systems der ))) OR ( j ventral nerve age disc ))*.