Talvez deva tentar algumas variações de ortografia:
natl computers » small computers (Expandir a Pesquisa), panel computers (Expandir a Pesquisa), can computers (Expandir a Pesquisa)
computer crime » computer code (Expandir a Pesquisa)
compared cases » compared case (Expandir a Pesquisa), collared cases (Expandir a Pesquisa), compares bases (Expandir a Pesquisa)
aix computer » a computer (Expandir a Pesquisa), udx computer (Expandir a Pesquisa), tex computer (Expandir a Pesquisa)
computers a » computers _ (Expandir a Pesquisa)
c compared » care compared (Expandir a Pesquisa)
crime now » crime new (Expandir a Pesquisa), crime news (Expandir a Pesquisa), crime nova (Expandir a Pesquisa)
cases now » cases new (Expandir a Pesquisa), cases non (Expandir a Pesquisa), case now (Expandir a Pesquisa)
j natl » j nail (Expandir a Pesquisa), _ natl (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (Expandir a Pesquisa)
3 aix » _ aix (Expandir a Pesquisa), 3 air (Expandir a Pesquisa), d aix (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 aix computer crime now ))) or ( j c compared cases now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl computers a now ) OR ( 3 aix computer crime now ))) OR ( j c compared cases now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl computers a now ) or ( 3 aix computer crime now ))) or ( j c compared cases now ))*.