Talvez deva tentar algumas variações de ortografia:
directed neural » directed neuronal (Expandir a Pesquisa), direct neural (Expandir a Pesquisa), connected neural (Expandir a Pesquisa)
rnai directed » rna directed (Expandir a Pesquisa), rrna directed (Expandir a Pesquisa), mrna directed (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
nerve cyst » nerve cystic (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
due cystic » huge cystic (Expandir a Pesquisa), pure cystic (Expandir a Pesquisa), true cystic (Expandir a Pesquisa)
cystic dis » cystic ducts (Expandir a Pesquisa)
neural 5 » neural _ (Expandir a Pesquisa), neural a (Expandir a Pesquisa), neuronal 5 (Expandir a Pesquisa)
j spinal » j spina (Expandir a Pesquisa), j spinar (Expandir a Pesquisa), j spittal (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
5 dis » 5 disc (Expandir a Pesquisa), 5 dias (Expandir a Pesquisa), _ dis (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: (( rnai directed neural 5 dis ) or ((( j spinal nerve cyst dis ) or ( _ absence due cystic dis ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( rnai directed neural 5 dis ) OR ((( j spinal nerve cyst dis ) OR ( _ absence due cystic dis )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( rnai directed neural 5 dis ) or ((( j spinal nerve cyst dis ) or ( _ absence due cystic dis ))))*.