Talvez deva tentar algumas variações de ortografia:
labor computer » lab computer (Expandir a Pesquisa), player computer (Expandir a Pesquisa), about computer (Expandir a Pesquisa)
natl compared » nacl compared (Expandir a Pesquisa), nail compared (Expandir a Pesquisa), acl compared (Expandir a Pesquisa)
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
nat compr » la compr (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa)
can nextw » can new (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can net (Expandir a Pesquisa)
can next » can text (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
j labor » j labow (Expandir a Pesquisa), j laborde (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j natali (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (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 nat compr can next ) OR ( j labor computer can nextw ))) OR ( j natl compared can now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat compr can next ) OR ( j labor computer can nextw ))) OR ( j natl compared can now ))*.