Talvez deva tentar algumas variações de ortografia:
research system » research systems (Expandir a Pesquisa)
centner nerve » central nerve (Expandir a Pesquisa), cancer nerve (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
meng research » among research (Expandir a Pesquisa), being research (Expandir a Pesquisa), lung research (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
system delay » system data (Expandir a Pesquisa), system der (Expandir a Pesquisa)
j centner » j center (Expandir a Pesquisa), m centner (Expandir a Pesquisa), _ entner (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
i spinal » i spiral (Expandir a Pesquisa), iii spinal (Expandir a Pesquisa), l5 spinal (Expandir a Pesquisa)
cat dis » cat diets (Expandir a Pesquisa), cat diet (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
c dias » c diaz (Expandir a Pesquisa)
j meng » j mena (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 centner nerve cat dis ) OR ( i spinal nerve c dias ))) OR ( j meng research system delay ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j centner nerve cat dis ) or ( i spinal nerve c dias ))) or ( j meng research system delay ))*.