Talvez deva tentar algumas variações de ortografia:
deltas served » adults served (Expandir a Pesquisa), delta survey (Expandir a Pesquisa)
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
renal nerve » retinal nerve (Expandir a Pesquisa), cranial nerve (Expandir a Pesquisa), spinal nerve (Expandir a Pesquisa)
system due » system der (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
j deltas » _ deltas (Expandir a Pesquisa), j delta (Expandir a Pesquisa), j delmas (Expandir a Pesquisa)
served a » served _ (Expandir a Pesquisa), observed a (Expandir a Pesquisa)
a due » _ due (Expandir a Pesquisa), a dye (Expandir a Pesquisa), i due (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: (( a renal nerve system due ) or ((( j central nerve case dis ) or ( j deltas served a due ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a renal nerve system due ) OR ((( j central nerve case dis ) OR ( j deltas served a due )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a renal nerve system due ) or ((( j central nerve case dis ) or ( j deltas served a due ))))*.