Talvez deva tentar algumas variações de ortografia:
unit computer » units computers (Expandir a Pesquisa), tunis computer (Expandir a Pesquisa), ut computer (Expandir a Pesquisa)
natl computer » dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer code (Expandir a Pesquisa)
rat compared » rats compared (Expandir a Pesquisa), rate compared (Expandir a Pesquisa), fat 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)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
e natl » e natal (Expandir a Pesquisa), e nata (Expandir a Pesquisa), _ natl (Expandir a Pesquisa)
_ unit » _ united (Expandir a Pesquisa)
e rat » e rato (Expandir a Pesquisa), _ rat (Expandir a Pesquisa), a rat (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 natl computer can now ) or ( _ unit computer a new ))) or ( e rat compared a new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( e natl computer can now ) OR ( _ unit computer a new ))) OR ( e rat compared a new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( e natl computer can now ) or ( _ unit computer a new ))) or ( e rat compared a new ))*.