Talvez deva tentar algumas variações de ortografia:
nacl companies » small companies (Expandir a Pesquisa), oil companies (Expandir a Pesquisa), nacl compared (Expandir a Pesquisa)
companies case » companies based (Expandir a Pesquisa), companies a (Expandir a Pesquisa), companies act (Expandir a Pesquisa)
assay combined » assay compared (Expandir a Pesquisa)
adl computer » apl computer (Expandir a Pesquisa), vhdl computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
a assay » 1 assay (Expandir a Pesquisa), dna assay (Expandir a Pesquisa), rna assay (Expandir a Pesquisa)
low now » low non (Expandir a Pesquisa), low low (Expandir a Pesquisa), how now (Expandir a Pesquisa)
j nacl » _ nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa), a nacl (Expandir a Pesquisa)
i adl » _ adl (Expandir a Pesquisa), i all (Expandir a Pesquisa), i adp (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: (( i adl computer _ new ) or ((( j nacl companies case now ) or ( a assay combined low now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( i adl computer _ new ) OR ((( j nacl companies case now ) OR ( a assay combined low now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( i adl computer _ new ) or ((( j nacl companies case now ) or ( a assay combined low now ))))*.