Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
treat nerve » rat nerve (Expandir a Pesquisa), direct nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
system due » system de (Expandir a Pesquisa), system der (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
a center » a century (Expandir a Pesquisa)
j treat » j threat (Expandir a Pesquisa), a treat (Expandir a Pesquisa), j trent (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
c die » c diez (Expandir a Pesquisa), c dieb (Expandir a Pesquisa), c diet (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 treat nerve system dis ) or ( a center nerve system due ))) or ( j central nerve c die ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j treat nerve system dis ) OR ( a center nerve system due ))) OR ( j central nerve c die )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j treat nerve system dis ) or ( a center nerve system due ))) or ( j central nerve c die ))*.