Talvez deva tentar algumas variações de ortografia:
delta nurses » data nurses (Expandir a Pesquisa), delta viruses (Expandir a Pesquisa), delta biases (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
delta nerve » beta nerve (Expandir a Pesquisa), deltoid nerve (Expandir a Pesquisa), deltas served (Expandir a Pesquisa)
nurses case » nurses cease (Expandir a Pesquisa), nurse case (Expandir a Pesquisa), nurses care (Expandir a Pesquisa)
system dcs » system dcus (Expandir a Pesquisa), system sdcs (Expandir a Pesquisa), system des (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case did (Expandir a Pesquisa), case does (Expandir a Pesquisa)
j delta » j della (Expandir a Pesquisa), j delton (Expandir a Pesquisa), j deluca (Expandir a Pesquisa)
case di » case did (Expandir a Pesquisa), case dti (Expandir a Pesquisa), case de (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: (( _ crest nerve system dcs ) or ((( j delta nerve case di ) or ( j delta nurses case dis ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ crest nerve system dcs ) OR ((( j delta nerve case di ) OR ( j delta nurses case dis )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ crest nerve system dcs ) or ((( j delta nerve case di ) or ( j delta nurses case dis ))))*.