Talvez deva tentar algumas variações de ortografia:
renal nerve » retinal nerve (Expandir a Pesquisa), cranial nerve (Expandir a Pesquisa), spinal nerve (Expandir a Pesquisa)
treat nerve » rat nerve (Expandir a Pesquisa), direct nerve (Expandir a Pesquisa)
benzo nerve » bent nerve (Expandir a Pesquisa), benign nerve (Expandir a Pesquisa)
nerve cat » nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
nerve can » merve can (Expandir a Pesquisa), nerve cn (Expandir a Pesquisa), nerve canal (Expandir a Pesquisa)
can diet » can direct (Expandir a Pesquisa), than diet (Expandir a Pesquisa)
a treat » a treated (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (Expandir a Pesquisa)
i renal » i real (Expandir a Pesquisa)
j benzo » j bento (Expandir a Pesquisa), j benito (Expandir a Pesquisa), j benton (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": "(((( a treat nerve cat dis ) OR ( i renal nerve can diet ))) OR ( j benzo nerve cat dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a treat nerve cat dis ) OR ( i renal nerve can diet ))) OR ( j benzo nerve cat dis ))*.