Talvez deva tentar algumas variações de ortografia:
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), icat computer (Expandir a Pesquisa)
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
cat compared » cast compared (Expandir a Pesquisa), cats compared (Expandir a Pesquisa), ct compared (Expandir a Pesquisa)
narr comp » barr com (Expandir a Pesquisa), parr comb (Expandir a Pesquisa)
can netw » can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can now (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
j narr » l narr (Expandir a Pesquisa), j nair (Expandir a Pesquisa), j nare (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (Expandir a Pesquisa)
j cat » _ cat (Expandir a Pesquisa), a cat (Expandir a Pesquisa), j cao (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 computer can netw ) OR ( j narr comp can new ))) OR ( j cat compared _ netw ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat computer can netw ) OR ( j narr comp can new ))) OR ( j cat compared _ netw ))*.