Talvez deva tentar algumas variações de ortografia:
natl computers » small computers (Expandir a Pesquisa), units computers (Expandir a Pesquisa), panel computers (Expandir a Pesquisa)
compared cases » compared case (Expandir a Pesquisa), collared cases (Expandir a Pesquisa), compares bases (Expandir a Pesquisa)
diet compared » test compared (Expandir a Pesquisa), ct compared (Expandir a Pesquisa), diet combined (Expandir a Pesquisa)
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
computers a » computers _ (Expandir a Pesquisa)
2 computer » can computer (Expandir a Pesquisa), cam computer (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
a ngoc » ha ngoc (Expandir a Pesquisa), ta ngoc (Expandir a Pesquisa), la ngoc (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: (((( _ natl computers a ngoc ) or ( 3 2 computer can now ))) or ( 6j diet compared cases new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ natl computers a ngoc ) OR ( 3 2 computer can now ))) OR ( 6j diet compared cases new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ natl computers a ngoc ) or ( 3 2 computer can now ))) or ( 6j diet compared cases new ))*.