Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
barker code » barker coded (Expandir a Pesquisa), barker clyde (Expandir a Pesquisa), barker colin (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
based new » based next (Expandir a Pesquisa), based near (Expandir a Pesquisa), based n (Expandir a Pesquisa)
l barker » a barker (Expandir a Pesquisa), l baker (Expandir a Pesquisa), _ barker (Expandir a Pesquisa)
code can » codes can (Expandir a Pesquisa), code case (Expandir a Pesquisa), code cart (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa)
j nasr » j nash (Expandir a Pesquisa), a nasr (Expandir a Pesquisa), m nasr (Expandir a Pesquisa)
j ut » j u (Expandir a Pesquisa), j et (Expandir a Pesquisa), j st (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 nasr clamp can now ) or ( l barker code can non ))) or ( j ut computer based new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j nasr clamp can now ) OR ( l barker code can non ))) OR ( j ut computer based new ))*.