Talvez deva tentar algumas variações de ortografia:
unit computer » units computers (Expandir a Pesquisa), tunis computer (Expandir a Pesquisa), ut computer (Expandir a Pesquisa)
act compared » ct compared (Expandir a Pesquisa), pet compared (Expandir a Pesquisa), active compared (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
can netw » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
j unit » j unio (Expandir a Pesquisa)
a nasa » a nasal (Expandir a Pesquisa), la nasa (Expandir a Pesquisa), a nash (Expandir a Pesquisa)
1 act » 1 acts (Expandir a Pesquisa), 1 acto (Expandir a Pesquisa), _ act (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 unit computer a neto ) or ( a nasa compr can netw ))) or ( 1 act compared a new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j unit computer a neto ) OR ( a nasa compr can netw ))) OR ( 1 act compared a new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j unit computer a neto ) or ( a nasa compr can netw ))) or ( 1 act compared a new ))*.