Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), reserve system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
absent nerve » bent nerve (Expandir a Pesquisa), abducent nerve (Expandir a Pesquisa), absent native (Expandir a Pesquisa)
detect novel » detects novel (Expandir a Pesquisa), detect non (Expandir a Pesquisa)
system di » system de (Expandir a Pesquisa), system d (Expandir a Pesquisa), system dias (Expandir a Pesquisa)
novel can » novel ca (Expandir a Pesquisa), novel ca2 (Expandir a Pesquisa), novel cap (Expandir a Pesquisa)
_ absent » _ absence (Expandir a Pesquisa)
j detect » je detect (Expandir a Pesquisa), _ detect (Expandir a Pesquisa), 5 detect (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (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: (( a central nerve system di ) or ((( _ absent nerve system di ) or ( j detect novel can dcs ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a central nerve system di ) OR ((( _ absent nerve system di ) OR ( j detect novel can dcs )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a central nerve system di ) or ((( _ absent nerve system di ) or ( j detect novel can dcs ))))*.