Talvez deva tentar algumas variações de ortografia:
psl companies » oil companies (Expandir a Pesquisa), bse companies (Expandir a Pesquisa), tfl companies (Expandir a Pesquisa)
companies act » companies a (Expandir a Pesquisa), companies _ (Expandir a Pesquisa)
computed a » computed _ (Expandir a Pesquisa), computed x (Expandir a Pesquisa), computed n (Expandir a Pesquisa)
marty afj » mart afj (Expandir a Pesquisa), martin afj (Expandir a Pesquisa), marty anja (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
j marty » j marti (Expandir a Pesquisa), j martin (Expandir a Pesquisa), j martos (Expandir a Pesquisa)
afj can » a.j cano (Expandir a Pesquisa)
act new » act now (Expandir a Pesquisa), ct new (Expandir a Pesquisa), tract new (Expandir a Pesquisa)
a netw » a neto (Expandir a Pesquisa), a neta (Expandir a Pesquisa), a netb (Expandir a Pesquisa)
_ psl » _ psa (Expandir a Pesquisa), _ psi (Expandir a Pesquisa), _ psd (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: (((( j _ computed a netw ) or ( j marty afj can newts ))) or ( _ psl companies act new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j _ computed a netw ) OR ( j marty afj can newts ))) OR ( _ psl companies act new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j _ computed a netw ) or ( j marty afj can newts ))) or ( _ psl companies act new ))*.