Talvez deva tentar algumas variações de ortografia:
central neural » central nepal (Expandir a Pesquisa), central neurons (Expandir a Pesquisa)
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), pectoral nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
neural cest » neural crest (Expandir a Pesquisa), neural cost (Expandir a Pesquisa), neural cyst (Expandir a Pesquisa)
system due » system der (Expandir a Pesquisa)
bela nerve » beta nerve (Expandir a Pesquisa), pgla nerve (Expandir a Pesquisa), delays nerve (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa), hemi central (Expandir a Pesquisa)
cest dis » cest disc (Expandir a Pesquisa), chest dis (Expandir a Pesquisa), cest fisp (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case did (Expandir a Pesquisa), case di (Expandir a Pesquisa)
j bela » j bell (Expandir a Pesquisa), j belval (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( j central nerve system due ) or ( i central neural cest dis ))) or ( j bela nerve case dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j central nerve system due ) OR ( i central neural cest dis ))) OR ( j bela nerve case dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j central nerve system due ) or ( i central neural cest dis ))) or ( j bela nerve case dis ))*.