Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
aix computer » udx computer (Expandir a Pesquisa), tex computer (Expandir a Pesquisa), matrix computer (Expandir a Pesquisa)
nacl cacl » nacl kcl (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa)
cacl ca » cacl2 na (Expandir a Pesquisa)
3 nail » m nail (Expandir a Pesquisa)
nail a » nail _ (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), a nacl (Expandir a Pesquisa)
ca now » ca no3 (Expandir a Pesquisa), ca non (Expandir a Pesquisa)
a can » _ can (Expandir a Pesquisa), a cat (Expandir a Pesquisa), i can (Expandir a Pesquisa)
_ aix » _ air (Expandir a Pesquisa), _ aid (Expandir a Pesquisa), _ aim (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: (((( 3 nail a can non ) or ( 3 nacl cacl ca now ))) or ( _ aix computer based now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( 3 nail a can non ) OR ( 3 nacl cacl ca now ))) OR ( _ aix computer based now ))*.