Talvez deva tentar algumas variações de ortografia:
held computers » held computer (Expandir a Pesquisa), handheld computers (Expandir a Pesquisa)
days compared » assays compared (Expandir a Pesquisa), lens compared (Expandir a Pesquisa)
cold computer » mold computer (Expandir a Pesquisa), old computer (Expandir a Pesquisa), world computer (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
a days » a day's (Expandir a Pesquisa), _ days (Expandir a Pesquisa), 7 days (Expandir a Pesquisa)
a news » wpa news (Expandir a Pesquisa), cua news (Expandir a Pesquisa)
j cold » j cole (Expandir a Pesquisa), j cola (Expandir a Pesquisa), j colt (Expandir a Pesquisa)
a netw » a neto (Expandir a Pesquisa), a neta (Expandir a Pesquisa), a netb (Expandir a Pesquisa)
_ held » _ hela (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: (( a days compared a news ) or ((( j cold computer a netw ) or ( _ held computers _ netw ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a days compared a news ) OR ((( j cold computer a netw ) OR ( _ held computers _ netw )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a days compared a news ) or ((( j cold computer a netw ) or ( _ held computers _ netw ))))*.