Talvez deva tentar algumas variações de ortografia:
companies based » composites based (Expandir a Pesquisa), complexes based (Expandir a Pesquisa), company based (Expandir a Pesquisa)
nat companies » meat companies (Expandir a Pesquisa), gas companies (Expandir a Pesquisa), can companies (Expandir a Pesquisa)
based netw » based new (Expandir a Pesquisa), based net (Expandir a Pesquisa), based next (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
can netw » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
role dan » role dans (Expandir a Pesquisa), role can (Expandir a Pesquisa), ole dan (Expandir a Pesquisa)
e natal » de natal (Expandir a Pesquisa), pre natal (Expandir a Pesquisa), e natural (Expandir a Pesquisa)
dan non » than non (Expandir a Pesquisa), dan ning (Expandir a Pesquisa)
l role » l rose (Expandir a Pesquisa), l robles (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), a nat (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: (((( j nat companies based netw ) OR ( e natal clamp can netw ))) OR ( _ l role dan non ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat companies based netw ) or ( e natal clamp can netw ))) or ( _ l role dan non ))*.