Talvez deva tentar algumas variações de ortografia:
recurrence nerve » recurrent nerve (Expandir a Pesquisa), recurrence curve (Expandir a Pesquisa), recurrence degree (Expandir a Pesquisa)
j recurrence » c recurrence (Expandir a Pesquisa), b recurrence (Expandir a Pesquisa), low recurrence (Expandir a Pesquisa)
benet nerve » bent nerve (Expandir a Pesquisa), detect nerve (Expandir a Pesquisa), absent nerve (Expandir a Pesquisa)
hi retinal » ii retinal (Expandir a Pesquisa), hemi retinal (Expandir a Pesquisa), epi retinal (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 tdcs » a tdcs (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (Expandir a Pesquisa)
j benet » j bennett (Expandir a Pesquisa), j benito (Expandir a Pesquisa), j benesi (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 recurrence nerve cat dis ) OR ( hi retinal nerve can tdcs ))) OR ( j benet nerve cat dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j recurrence nerve cat dis ) or ( hi retinal nerve can tdcs ))) or ( j benet nerve cat dis ))*.