Talvez deva tentar algumas variações de ortografia:
companies based » composites based (Expandir a Pesquisa), complexes based (Expandir a Pesquisa), company based (Expandir a Pesquisa)
shale companies » shame companies (Expandir a Pesquisa), share companies (Expandir a Pesquisa), state companies (Expandir a Pesquisa)
do computers » do computer (Expandir a Pesquisa), how computers (Expandir a Pesquisa), des computers (Expandir a Pesquisa)
nagy company » bay company (Expandir a Pesquisa), day company (Expandir a Pesquisa), ney company (Expandir a Pesquisa)
computers a » computers _ (Expandir a Pesquisa)
based no2 » based non (Expandir a Pesquisa), based noc (Expandir a Pesquisa), based nod (Expandir a Pesquisa)
j shale » j shane (Expandir a Pesquisa), j shape (Expandir a Pesquisa), d.j shale (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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: (( _ do computers a now ) OR ((( j shale companies based no2 ) OR ( i nagy company _ non ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ do computers a now ) or ((( j shale companies based no2 ) or ( i nagy company _ non ))))*.