Talvez deva tentar algumas variações de ortografia:
reactive systems » reactive system (Expandir a Pesquisa), reaction systems (Expandir a Pesquisa), reacting systems (Expandir a Pesquisa)
absent reactive » augment reactive (Expandir a Pesquisa), absent native (Expandir a Pesquisa), latent reactive (Expandir a Pesquisa)
mental nerve » ventral nerve (Expandir a Pesquisa), renal nerve (Expandir a Pesquisa)
systems dss » system dss (Expandir a Pesquisa), systems do (Expandir a Pesquisa), systems de (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), recent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mehta (Expandir a Pesquisa), j mena (Expandir a Pesquisa)
j absent » _ absent (Expandir a Pesquisa), l absent (Expandir a Pesquisa), 17 absent (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), ii cent (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: (( i cent nerve cat due ) or ((( j mental nerve cat due ) or ( j absent reactive systems dss ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( i cent nerve cat due ) OR ((( j mental nerve cat due ) OR ( j absent reactive systems dss )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( i cent nerve cat due ) or ((( j mental nerve cat due ) or ( j absent reactive systems dss ))))*.