Talvez deva tentar algumas variações de ortografia:
company barriers » comparing barriers (Expandir a Pesquisa), companies barriers (Expandir a Pesquisa), common barriers (Expandir a Pesquisa)
promessa can » promessa da (Expandir a Pesquisa), promessa nao (Expandir a Pesquisa), promessa a (Expandir a Pesquisa)
barriers new » barrier new (Expandir a Pesquisa), barriers need (Expandir a Pesquisa), barriers how (Expandir a Pesquisa)
comes clean » comes can (Expandir a Pesquisa), does clean (Expandir a Pesquisa), becomes clear (Expandir a Pesquisa)
clean newly » can newly (Expandir a Pesquisa), cleaves newly (Expandir a Pesquisa)
oil company » oil companies (Expandir a Pesquisa)
a promessa » a process (Expandir a Pesquisa)
l comes » l comps (Expandir a Pesquisa), l coles (Expandir a Pesquisa), l comas (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
3 oil » 3 oils (Expandir a Pesquisa), _ oil (Expandir a Pesquisa), l oil (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 l comes clean newly ) or ((( 5 a promessa can now ) or ( 3 oil company barriers new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comes clean newly ) OR ((( 5 a promessa can now ) OR ( 3 oil company barriers new )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comes clean newly ) or ((( 5 a promessa can now ) or ( 3 oil company barriers new ))))*.