Talvez deva tentar algumas variações de ortografia:
natl comparing » al comparing (Expandir a Pesquisa), all comparing (Expandir a Pesquisa), small comparing (Expandir a Pesquisa)
comparing case » comparing cancer (Expandir a Pesquisa), compelling case (Expandir a Pesquisa), comparing climate (Expandir a Pesquisa)
nail computer » daily computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa), il computer (Expandir a Pesquisa)
ray computer » ray computed (Expandir a Pesquisa), uy computer (Expandir a Pesquisa)
computer aid » computer aided (Expandir a Pesquisa), computer a (Expandir a Pesquisa), computer age (Expandir a Pesquisa)
aid nowe » aid lower (Expandir a Pesquisa), aid noise (Expandir a Pesquisa), aid power (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
3 nail » 3 nacl (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
j ray » x ray (Expandir a Pesquisa), _ ray (Expandir a Pesquisa), w ray (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 ray computer _ now ) OR ( 3 nail computer aid nowe ))) OR ( j natl comparing case now ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j ray computer _ now ) or ( 3 nail computer aid nowe ))) or ( j natl comparing case now ))*.