Talvez deva tentar algumas variações de ortografia:
head computers » held computers (Expandir a Pesquisa), head computer (Expandir a Pesquisa), head computed (Expandir a Pesquisa)
colt computer » cost computer (Expandir a Pesquisa), color computer (Expandir a Pesquisa), cat computer (Expandir a Pesquisa)
days compare » days compared (Expandir a Pesquisa), rays compared (Expandir a Pesquisa), day compared (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
compare a » compare _ (Expandir a Pesquisa)
a newts » _ newts (Expandir a Pesquisa), a news (Expandir a Pesquisa), a newt (Expandir a Pesquisa)
j days » j davys (Expandir a Pesquisa), j daas (Expandir a Pesquisa)
j colt » j colet (Expandir a Pesquisa), j cole (Expandir a Pesquisa), j cola (Expandir a Pesquisa)
a netb » a neto (Expandir a Pesquisa), _ netb (Expandir a Pesquisa), a neta (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 days compare a newts ) or ((( j colt computer a netb ) or ( _ head computers _ netw ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j days compare a newts ) OR ((( j colt computer a netb ) OR ( _ head computers _ netw )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j days compare a newts ) or ((( j colt computer a netb ) or ( _ head computers _ netw ))))*.