Talvez deva tentar algumas variações de ortografia:
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
apc computer » pc computer (Expandir a Pesquisa), tgpc computer (Expandir a Pesquisa), olpc computer (Expandir a Pesquisa)
natl clamp » tail clamp (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa)
a compr » a compra (Expandir a Pesquisa), la compr (Expandir a Pesquisa), a comp (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
_ natl » _ natal (Expandir a Pesquisa), _ nat'l (Expandir a Pesquisa), _ nato (Expandir a Pesquisa)
_ apc » _ app (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j a compr can new ) OR ( _ natl clamp can near ))) OR ( _ apc computer can now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j a compr can new ) OR ( _ natl clamp can near ))) OR ( _ apc computer can now ))*.