Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
tunis computer » studies computer (Expandir a Pesquisa), tetris computer (Expandir a Pesquisa), things computer (Expandir a Pesquisa)
natl computer » dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
nat compared » fat compared (Expandir a Pesquisa), rat compared (Expandir a Pesquisa), cat compared (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
based new » based next (Expandir a Pesquisa), based near (Expandir a Pesquisa), based n (Expandir a Pesquisa)
j tunis » _ tunis (Expandir a Pesquisa), a tunis (Expandir a Pesquisa), e tunis (Expandir a Pesquisa)
_ nat » _ net (Expandir a Pesquisa), _ nad (Expandir a Pesquisa), _ nab (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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: (((( _ natl computer based new ) or ( j tunis computer based new ))) or ( _ nat compared a now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ natl computer based new ) OR ( j tunis computer based new ))) OR ( _ nat compared a now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ natl computer based new ) or ( j tunis computer based new ))) or ( _ nat compared a now ))*.