Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
absent native » present native (Expandir a Pesquisa), absent nails (Expandir a Pesquisa), absent nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
dental nerve » mental nerve (Expandir a Pesquisa), ventral nerve (Expandir a Pesquisa), pudendal nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
_ absent » _ absence (Expandir a Pesquisa)
native o » native _ (Expandir a Pesquisa), native a (Expandir a Pesquisa), native 5 (Expandir a Pesquisa)
nerve o » nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j central nerve system dis ) OR ( i dental nerve o dia ))) OR ( _ absent native o dia ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j central nerve system dis ) or ( i dental nerve o dia ))) or ( _ absent native o dia ))*.