Talvez deva tentar algumas variações de ortografia:
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
aix computers » aix computer (Expandir a Pesquisa), aids computers (Expandir a Pesquisa), a computers (Expandir a Pesquisa)
oil bomb » oil body (Expandir a Pesquisa)
nacl co2 » nacl co (Expandir a Pesquisa)
co2 case » co2 causes (Expandir a Pesquisa), co2 laser (Expandir a Pesquisa), co2 based (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
a oil » _ oil (Expandir a Pesquisa), l oil (Expandir a Pesquisa), i oil (Expandir a Pesquisa)
2 now » _ now (Expandir a Pesquisa), 2 non (Expandir a Pesquisa), 2 no3 (Expandir a Pesquisa)
2 new » a new (Expandir a Pesquisa), _ new (Expandir a Pesquisa), 2 neu (Expandir a Pesquisa)
d aix » _ 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: (((( a oil bomb ((2 now) OR (2 new)) ) or ( 3 nacl co2 case now ))) or ( d aix computers can now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a oil bomb ((2 now) OR (2 new)) ) OR ( 3 nacl co2 case now ))) OR ( d aix computers can now )).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( a oil bomb ((2 now) OR (2 new)) ) or ( 3 nacl co2 case now ))) or ( d aix computers can now ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a oil bomb ((2 now) OR (2 new)) ) or ( 3 nacl co2 case now ))) or ( d aix computers can now ))*.