Talvez deva tentar algumas variações de ortografia:
digital computer » digital computers (Expandir a Pesquisa), digital competence (Expandir a Pesquisa)
unit computer » unit computed (Expandir a Pesquisa), units computers (Expandir a Pesquisa), tunis computer (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer can (Expandir a Pesquisa)
natl compared » nacl compared (Expandir a Pesquisa), nail compared (Expandir a Pesquisa), al compared (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
j digital » _ digital (Expandir a Pesquisa), a digital (Expandir a Pesquisa), 6 digital (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
j unit » a unit (Expandir a Pesquisa), 3 unit (Expandir a Pesquisa), 1 unit (Expandir a Pesquisa)
j natl » j nail (Expandir a Pesquisa), _ natl (Expandir a Pesquisa), j nat (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 digital computer a new ) or ( j unit computer case now ))) or ( j natl compared _ now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j digital computer a new ) OR ( j unit computer case now ))) OR ( j natl compared _ now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j digital computer a new ) or ( j unit computer case now ))) or ( j natl compared _ now ))*.