Talvez deva tentar algumas variações de ortografia:
affect neural » affects neural (Expandir a Pesquisa), affect neuronal (Expandir a Pesquisa), affect natural (Expandir a Pesquisa)
center nurse » center nurses (Expandir a Pesquisa), letter nurse (Expandir a Pesquisa), cancer nurse (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
nurse case » nurse care (Expandir a Pesquisa)
neural cat » neural cest (Expandir a Pesquisa), neural cost (Expandir a Pesquisa), neural co (Expandir a Pesquisa)
case does » cases does (Expandir a Pesquisa), cause does (Expandir a Pesquisa), case goes (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), j centeno (Expandir a Pesquisa), j cestero (Expandir a Pesquisa)
j affect » 1 affect (Expandir a Pesquisa), 2 affect (Expandir a Pesquisa), 3 affect (Expandir a Pesquisa)
a crest » _ crest (Expandir a Pesquisa), a creusot (Expandir a Pesquisa), a crespo (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 crest nerve case due ) or ( j center nurse case does ))) or ( j affect neural cat due ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a crest nerve case due ) OR ( j center nurse case does ))) OR ( j affect neural cat due )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a crest nerve case due ) or ( j center nurse case does ))) or ( j affect neural cat due ))*.