Talvez deva tentar algumas variações de ortografia:
center nervous » cental nervous (Expandir a Pesquisa), centra nervous (Expandir a Pesquisa), letter nervous (Expandir a Pesquisa)
benign nerve » benign nevi (Expandir a Pesquisa), benign neck (Expandir a Pesquisa), benign beale (Expandir a Pesquisa)
absent have » absent face (Expandir a Pesquisa), absent late (Expandir a Pesquisa), absent liver (Expandir a Pesquisa)
have caused » case caused (Expandir a Pesquisa), have used (Expandir a Pesquisa), change caused (Expandir a Pesquisa)
caused dna » causes dna (Expandir a Pesquisa), cause dna (Expandir a Pesquisa), caused a (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), j centeno (Expandir a Pesquisa), j cestero (Expandir a Pesquisa)
j absent » _ absent (Expandir a Pesquisa), 1 absent (Expandir a Pesquisa), l absent (Expandir a Pesquisa)
case dti » case data (Expandir a Pesquisa), based dti (Expandir a Pesquisa), case due (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j center nervous _ dis ) OR ((( j absent have caused dna ) OR ( _ benign nerve case dti ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j center nervous _ dis ) or ((( j absent have caused dna ) or ( _ benign nerve case dti ))))*.