Talvez deva tentar algumas variações de ortografia:
computer models » computer model (Expandir a Pesquisa), computer modeling (Expandir a Pesquisa), computer modelling (Expandir a Pesquisa)
natl computers » small computers (Expandir a Pesquisa), units computers (Expandir a Pesquisa), panel computers (Expandir a Pesquisa)
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
unit compared » test compared (Expandir a Pesquisa), ct compared (Expandir a Pesquisa), diet compared (Expandir a Pesquisa)
aix computer » udx computer (Expandir a Pesquisa), ip computer (Expandir a Pesquisa), tex computer (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
models now » models know (Expandir a Pesquisa), models new (Expandir a Pesquisa), modern now (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
j unit » j unio (Expandir a Pesquisa)
3 aix » _ aix (Expandir a Pesquisa), d aix (Expandir a Pesquisa), 3 atx (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 can now ) or ( 3 aix computer models now ))) or ( j unit compared can now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl computers can now ) OR ( 3 aix computer models now ))) OR ( j unit compared can now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl computers can now ) or ( 3 aix computer models now ))) or ( j unit compared can now ))*.