Talvez deva tentar algumas variações de ortografia:
natl computers » small computers (Expandir a Pesquisa), panel computers (Expandir a Pesquisa), can computers (Expandir a Pesquisa)
nacl computer » dal computer (Expandir a Pesquisa), al computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa)
case compared » cases compared (Expandir a Pesquisa), care compared (Expandir a Pesquisa), cast compared (Expandir a Pesquisa)
compared laws » compared law (Expandir a Pesquisa), compared less (Expandir a Pesquisa), compiled laws (Expandir a Pesquisa)
computer ann » computer a (Expandir a Pesquisa), computer age (Expandir a Pesquisa), computer aid (Expandir a Pesquisa)
j natl » j nail (Expandir a Pesquisa), _ natl (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
laws h » laws _ (Expandir a Pesquisa), laws a (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 natl computers _ now ) OR ( 3 nacl computer ann nowe ))) OR ( _ case compared laws h ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl computers _ now ) or ( 3 nacl computer ann nowe ))) or ( _ case compared laws h ))*.