Talvez deva tentar algumas variações de ortografia:
absent nervous » insect nervous (Expandir a Pesquisa), absent nerve (Expandir a Pesquisa), affect nervous (Expandir a Pesquisa)
detect neural » detect natural (Expandir a Pesquisa), direct neural (Expandir a Pesquisa), detect central (Expandir a Pesquisa)
cent nervous » cental nervous (Expandir a Pesquisa), center nervous (Expandir a Pesquisa), get nervous (Expandir a Pesquisa)
neural can » neural canal (Expandir a Pesquisa), neural a (Expandir a Pesquisa), neural co (Expandir a Pesquisa)
c1 absent » _ absent (Expandir a Pesquisa), 17 absent (Expandir a Pesquisa), eo absent (Expandir a Pesquisa)
system d » system de (Expandir a Pesquisa), system der (Expandir a Pesquisa), system des (Expandir a Pesquisa)
can dis » can disc (Expandir a Pesquisa), van dis (Expandir a Pesquisa), can die (Expandir a Pesquisa)
a cent » a cena (Expandir a Pesquisa), a cenp (Expandir a Pesquisa), a center (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 cent nervous system d ) or ((( c1 absent nervous system d ) or ( _ detect neural can dis ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a cent nervous system d ) OR ((( c1 absent nervous system d ) OR ( _ detect neural can dis )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a cent nervous system d ) or ((( c1 absent nervous system d ) or ( _ detect neural can dis ))))*.