Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), icat computer (Expandir a Pesquisa)
natali compr » natalia comp (Expandir a Pesquisa), natali gomez (Expandir a Pesquisa), natali costa (Expandir a Pesquisa)
based note » based node (Expandir a Pesquisa), based noe (Expandir a Pesquisa), based novel (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
can never » than never (Expandir a Pesquisa), a never (Expandir a Pesquisa), has never (Expandir a Pesquisa)
e natali » e natalia (Expandir a Pesquisa), e natalie (Expandir a Pesquisa), e natal (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
e natl » e natal (Expandir a Pesquisa), e nata (Expandir a Pesquisa), _ natl (Expandir a Pesquisa)
e nat » e nata (Expandir a Pesquisa), e nao (Expandir a Pesquisa), e nas (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: (((( e nat computer based note ) or ( e natl compr can never ))) or ( e natali compr can now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( e nat computer based note ) OR ( e natl compr can never ))) OR ( e natali compr can now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( e nat computer based note ) or ( e natl compr can never ))) or ( e natali compr can now ))*.