Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
das computer » dos computer (Expandir a Pesquisa), d0s computer (Expandir a Pesquisa), does computer (Expandir a Pesquisa)
copra can » copra c (Expandir a Pesquisa), copro con (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa), can new (Expandir a Pesquisa)
l copra » l chopra (Expandir a Pesquisa), l copras (Expandir a Pesquisa), la copra (Expandir a Pesquisa)
a clamp » c clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa), a claims (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
a newts » _ newts (Expandir a Pesquisa), a news (Expandir a Pesquisa), a newt (Expandir a Pesquisa)
a das » e das (Expandir a Pesquisa), a day (Expandir a Pesquisa), a dos (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 l copra can near ) or ( j a clamp a newts ))) or ( a das computer based now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j l copra can near ) OR ( j a clamp a newts ))) OR ( a das computer based now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j l copra can near ) or ( j a clamp a newts ))) or ( a das computer based now ))*.