Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
call computer » small computer (Expandir a Pesquisa), scale computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa)
nacl compared » acl compared (Expandir a Pesquisa), small compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j call » j calle (Expandir a Pesquisa), j calls (Expandir a Pesquisa), j calu (Expandir a Pesquisa)
j nacl » a nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa), 1 nacl (Expandir a Pesquisa)
e comb » e combs (Expandir a Pesquisa), e como (Expandir a Pesquisa), e come (Expandir a Pesquisa)
comb a » comb _ (Expandir a Pesquisa), comb m (Expandir a Pesquisa), comb n (Expandir a Pesquisa)
a netw » a neto (Expandir a Pesquisa), a neta (Expandir a Pesquisa), a netb (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 call computer based now ) or ( j nacl compared can now ))) or ( j e comb a netw ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j call computer based now ) OR ( j nacl compared can now ))) OR ( j e comb a netw ))*.