Talvez deva tentar algumas variações de ortografia:
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
nacl cortex » renal cortex (Expandir a Pesquisa), nacl content (Expandir a Pesquisa), basal cortex (Expandir a Pesquisa)
a computers » a computer's (Expandir a Pesquisa), a computer (Expandir a Pesquisa), _ computers (Expandir a Pesquisa)
cortex can » cortex a (Expandir a Pesquisa)
dan ning » yan ning (Expandir a Pesquisa), han ning (Expandir a Pesquisa), tan ning (Expandir a Pesquisa)
nacl co » nacl co2 (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa), nacl kno (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
3 nacl » m nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
co dan » co dao (Expandir a Pesquisa), bo dan (Expandir a Pesquisa), co das (Expandir a Pesquisa)
a nacl » _ nacl (Expandir a Pesquisa), m 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 co dan ning ) OR ( a nacl cortex can now ))) OR ( j a computers can now ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 nacl co dan ning ) or ( a nacl cortex can now ))) or ( j a computers can now ))*.