Talvez deva tentar algumas variações de ortografia:
natl computers » small computers (Expandir a Pesquisa), units computers (Expandir a Pesquisa), panel computers (Expandir a Pesquisa)
computer code » computer model (Expandir a Pesquisa), computer models (Expandir a Pesquisa), computer crime (Expandir a Pesquisa)
compared case » compared can (Expandir a Pesquisa), companies case (Expandir a Pesquisa), comparing case (Expandir a Pesquisa)
computers a » computers _ (Expandir a Pesquisa)
il computer » dal computer (Expandir a Pesquisa), line computer (Expandir a Pesquisa), vhdl computer (Expandir a Pesquisa)
code now » code new (Expandir a Pesquisa), code noir (Expandir a Pesquisa), code net (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
j test » j testa (Expandir a Pesquisa), j teat (Expandir a Pesquisa), j tett (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (Expandir a Pesquisa)
3 il » _ il (Expandir a Pesquisa), 3 yl (Expandir a Pesquisa), e il (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 computers a now ) or ( 3 il computer code now ))) or ( j test compared case new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl computers a now ) OR ( 3 il computer code now ))) OR ( j test compared case new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl computers a now ) or ( 3 il computer code now ))) or ( j test compared case new ))*.