Talvez deva tentar algumas variações de ortografia:
reactive system » reactive systems (Expandir a Pesquisa), reaction system (Expandir a Pesquisa), reaction systems (Expandir a Pesquisa)
absent reactive » augment reactive (Expandir a Pesquisa), absent native (Expandir a Pesquisa), latent reactive (Expandir a Pesquisa)
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
system di » system de (Expandir a Pesquisa), system d (Expandir a Pesquisa), system dias (Expandir a Pesquisa)
j absent » _ absent (Expandir a Pesquisa), l absent (Expandir a Pesquisa), 17 absent (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (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: (( j central nerve a due ) or ((( j bent nerve a due ) or ( j absent reactive system di ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j central nerve a due ) OR ((( j bent nerve a due ) OR ( j absent reactive system di )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j central nerve a due ) or ((( j bent nerve a due ) or ( j absent reactive system di ))))*.