Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
days computer » says computers (Expandir a Pesquisa), does computer (Expandir a Pesquisa), dos computer (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
nat comp » nat comm (Expandir a Pesquisa), et comp (Expandir a Pesquisa), nat cov (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
clamp ar » clamp a (Expandir a Pesquisa), clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), a claims (Expandir a Pesquisa)
ar new » war new (Expandir a Pesquisa), bar new (Expandir a Pesquisa), ear new (Expandir a Pesquisa)
a days » a day's (Expandir a Pesquisa), _ days (Expandir a Pesquisa), 7 days (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), a nat (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 comp can new ) or ( j a clamp ar new ))) or ( a days computer based now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j nat comp can new ) OR ( j a clamp ar new ))) OR ( a days computer based now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat comp can new ) or ( j a clamp ar new ))) or ( a days computer based now ))*.