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 curve » current survey (Expandir a Pesquisa), current care (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
absent nerve » bent nerve (Expandir a Pesquisa), abducent nerve (Expandir a Pesquisa), augment nerve (Expandir a Pesquisa)
system dcs » system dcus (Expandir a Pesquisa), system sdcs (Expandir a Pesquisa), system des (Expandir a Pesquisa)
data dog » data do (Expandir a Pesquisa), data doi (Expandir a Pesquisa), data dos (Expandir a Pesquisa)
_ absent » _ absence (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
a dog » _ dog (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: (((( 1hfj central nerve system dcs ) or ( i current curve data dog ))) or ( _ absent nerve a dog ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( 1hfj central nerve system dcs ) OR ( i current curve data dog ))) OR ( _ absent nerve a dog )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 1hfj central nerve system dcs ) or ( i current curve data dog ))) or ( _ absent nerve a dog ))*.