Talvez deva tentar algumas variações de ortografia:
computer's can » computers can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), computers can't (Expandir a Pesquisa)
basal complex » metal complex (Expandir a Pesquisa)
a computer's » a composer's (Expandir a Pesquisa), a computerised (Expandir a Pesquisa), a computed (Expandir a Pesquisa)
complex can » complex case (Expandir a Pesquisa), complex care (Expandir a Pesquisa), complex cell (Expandir a Pesquisa)
nacl co2 » nacl co (Expandir a Pesquisa)
han ning » yan ning (Expandir a Pesquisa), jian ning (Expandir a Pesquisa)
co2 han » co2 can (Expandir a Pesquisa), co2 dan (Expandir a Pesquisa), co2 heat (Expandir a Pesquisa)
can now » can non (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)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( 3 nacl co2 han ning ) OR ( a basal complex can new ))) OR ( j a computer's can now ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 nacl co2 han ning ) or ( a basal complex can new ))) or ( j a computer's can now ))*.