Talvez deva tentar algumas variações de ortografia:
computer code » computer model (Expandir a Pesquisa), computer models (Expandir a Pesquisa), computer crime (Expandir a Pesquisa)
acm computer » um computer (Expandir a Pesquisa), uym computer (Expandir a Pesquisa), cam computer (Expandir a Pesquisa)
natl amp » atl am (Expandir a Pesquisa), mat amp (Expandir a Pesquisa), al amp (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa), can new (Expandir a Pesquisa)
clamp ar » clamp a (Expandir a Pesquisa), clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
ar newts » can newts (Expandir a Pesquisa), _ newts (Expandir a Pesquisa), war news (Expandir a Pesquisa)
code now » code new (Expandir a Pesquisa), code non (Expandir a Pesquisa), code noir (Expandir a Pesquisa)
amp can » amp camp (Expandir a Pesquisa)
a clamp » dna clamp (Expandir a Pesquisa), a claims (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
a acm » ad acm (Expandir a Pesquisa), _ acm (Expandir a Pesquisa), a aco (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 amp can near ) or ( j a clamp ar newts ))) or ( a acm computer code now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl amp can near ) OR ( j a clamp ar newts ))) OR ( a acm computer code now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl amp can near ) or ( j a clamp ar newts ))) or ( a acm computer code now ))*.