Talvez deva tentar algumas variações de ortografia:
compelling case » comparing case (Expandir a Pesquisa), competing causes (Expandir a Pesquisa)
nat computers » what computers (Expandir a Pesquisa), iet computers (Expandir a Pesquisa), can computers (Expandir a Pesquisa)
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
natl computer » dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
al compelling » a compelling (Expandir a Pesquisa), any compelling (Expandir a Pesquisa), _ compelling (Expandir a Pesquisa)
computer i » computer im (Expandir a Pesquisa), computer _ (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
_ natl » _ natal (Expandir a Pesquisa), _ nat'l (Expandir a Pesquisa), _ nato (Expandir a Pesquisa)
i note » i notes (Expandir a Pesquisa), ii note (Expandir a Pesquisa), vi note (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (Expandir a Pesquisa)
a al » a a (Expandir a Pesquisa), a l (Expandir a Pesquisa), _ al (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: (((( j nat computers can now ) or ( _ natl computer i note ))) or ( a al compelling case now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j nat computers can now ) OR ( _ natl computer i note ))) OR ( a al compelling case now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat computers can now ) or ( _ natl computer i note ))) or ( a al compelling case now ))*.