Talvez deva tentar algumas variações de ortografia:
central neural » central nepal (Expandir a Pesquisa), central neurons (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
cancer nurse » cancer nurses (Expandir a Pesquisa), cancer course (Expandir a Pesquisa), cancer nude (Expandir a Pesquisa)
neural case » neutral case (Expandir a Pesquisa), neural causes (Expandir a Pesquisa), neural phase (Expandir a Pesquisa)
nurse cyst » nurse case (Expandir a Pesquisa), nurse system (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
j cancer » j canter (Expandir a Pesquisa), j cantero (Expandir a Pesquisa), j candel (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
i spinal » a spinal (Expandir a Pesquisa), i spiral (Expandir a Pesquisa), iii spinal (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (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.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j cancer nurse cyst dis ) OR ( i spinal nerve can dcs ))) OR ( j central neural case dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cancer nurse cyst dis ) or ( i spinal nerve can dcs ))) or ( j central neural case dis ))*.