Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
duty computer » dutch computer (Expandir a Pesquisa), uy computer (Expandir a Pesquisa), daily computer (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
based new » based next (Expandir a Pesquisa), based near (Expandir a Pesquisa), based n (Expandir a Pesquisa)
natl com » natal com (Expandir a Pesquisa), nat2 com (Expandir a Pesquisa), natal como (Expandir a Pesquisa)
cana new » canada new (Expandir a Pesquisa), china new (Expandir a Pesquisa), ghana new (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
a duty » _ duty (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 natl com cana new ) or ( j a clamp can newts ))) or ( a duty computer based new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl com cana new ) OR ( j a clamp can newts ))) OR ( a duty computer based new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl com cana new ) or ( j a clamp can newts ))) or ( a duty computer based new ))*.