Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
cost computer » chest computed (Expandir a Pesquisa), joint computer (Expandir a Pesquisa), about computer (Expandir a Pesquisa)
rat compared » rats compared (Expandir a Pesquisa), rate compared (Expandir a Pesquisa), rates compared (Expandir a Pesquisa)
nart tomar » para tomar (Expandir a Pesquisa), part tomas (Expandir a Pesquisa)
tomar than » tomar tushar (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
j cost » j costa (Expandir a Pesquisa), j coast (Expandir a Pesquisa), j colt (Expandir a Pesquisa)
j nart » _ nart (Expandir a Pesquisa), j narr (Expandir a Pesquisa), c nart (Expandir a Pesquisa)
a rat » _ rat (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: (((( j cost computer based now ) or ( j nart tomar than non ))) or ( a rat compared a now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j cost computer based now ) OR ( j nart tomar than non ))) OR ( a rat compared a now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cost computer based now ) or ( j nart tomar than non ))) or ( a rat compared a now ))*.