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), drive system (Expandir a Pesquisa)
direct nerve » direct energy (Expandir a Pesquisa), direct neural (Expandir a Pesquisa)
treat nerve » rat nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system di (Expandir a Pesquisa)
nerve cyst » nerve cat (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
j direct » j director (Expandir a Pesquisa), nhj direct (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
a treat » _ treat (Expandir a Pesquisa), a treated (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 direct nerve case dis ) OR ( a treat nerve system dis ))) OR ( j central nerve cyst due ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j direct nerve case dis ) or ( a treat nerve system dis ))) or ( j central nerve cyst due ))*.