Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
ai recurrent » a recurrent (Expandir a Pesquisa), ii recurrent (Expandir a Pesquisa), anti recurrent (Expandir a Pesquisa)
benton nerve » benign nerve (Expandir a Pesquisa), tendon nerve (Expandir a Pesquisa), bent nerve (Expandir a Pesquisa)
neural cat » neural cest (Expandir a Pesquisa), neural cost (Expandir a Pesquisa), neural co (Expandir a Pesquisa)
nerve can » nerve canal (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
nerve cat » nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
j benton » j benito (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (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.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( ai recurrent neural cat dis ) OR ( _ ventral nerve can dcs ))) OR ( j benton nerve cat dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( ai recurrent neural cat dis ) OR ( _ ventral nerve can dcs ))) OR ( j benton nerve cat dis ))*.