Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
i computer » ii computer (Expandir a Pesquisa), pi computer (Expandir a Pesquisa), d computer (Expandir a Pesquisa)
nat compr » la compr (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
based no2 » based non (Expandir a Pesquisa), based noc (Expandir a Pesquisa), based nod (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa), can new (Expandir a Pesquisa)
a clamp » 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)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), j nay (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 compr can near ) or ( j a clamp a newts ))) or ( j i computer based no2 ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j nat compr can near ) OR ( j a clamp a newts ))) OR ( j i computer based no2 )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat compr can near ) or ( j a clamp a newts ))) or ( j i computer based no2 ))*.