Talvez deva tentar algumas variações de ortografia:
companies case » companies based (Expandir a Pesquisa), companies a (Expandir a Pesquisa), companies act (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer can (Expandir a Pesquisa)
act companies » let companies (Expandir a Pesquisa), factor companies (Expandir a Pesquisa), active companies (Expandir a Pesquisa)
nay computer » navy computer (Expandir a Pesquisa), ray computer (Expandir a Pesquisa), only computer (Expandir a Pesquisa)
nat compr » la compr (Expandir a Pesquisa)
case note » case notes (Expandir a Pesquisa)
anc netw » soc netw (Expandir a Pesquisa), nc net (Expandir a Pesquisa)
e nat » e nata (Expandir a Pesquisa), e nao (Expandir a Pesquisa), e nas (Expandir a Pesquisa)
j nay » j nagy (Expandir a Pesquisa), _ nay (Expandir a Pesquisa)
2 act » 2 acts (Expandir a Pesquisa), _ act (Expandir a Pesquisa), 2 akt (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: (((( e nat compr anc netw ) or ( j nay computer case note ))) or ( 2 act companies case note ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( e nat compr anc netw ) OR ( j nay computer case note ))) OR ( 2 act companies case note )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( e nat compr anc netw ) or ( j nay computer case note ))) or ( 2 act companies case note ))*.