Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
compared case » compared cases (Expandir a Pesquisa), compared can (Expandir a Pesquisa), companies case (Expandir a Pesquisa)
nay computer » navy computer (Expandir a Pesquisa), ray computer (Expandir a Pesquisa), only computer (Expandir a Pesquisa)
ca2 compared » a2 compared (Expandir a Pesquisa), care compared (Expandir a Pesquisa), 2 compared (Expandir a Pesquisa)
based netw » based new (Expandir a Pesquisa), based net (Expandir a Pesquisa), based next (Expandir a Pesquisa)
case netw » case new (Expandir a Pesquisa), case note (Expandir a Pesquisa), case near (Expandir a Pesquisa)
anc netw » nc net (Expandir a Pesquisa)
a compr » a compra (Expandir a Pesquisa), la compr (Expandir a Pesquisa), a comp (Expandir a Pesquisa)
j nay » j nagy (Expandir a Pesquisa), _ nay (Expandir a Pesquisa)
2 ca2 » 2 car2 (Expandir a Pesquisa), p2 ca2 (Expandir a Pesquisa), _ ca2 (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": "(((( e a compr anc netw ) OR ( j nay computer based netw ))) OR ( 2 ca2 compared case netw ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( e a compr anc netw ) OR ( j nay computer based netw ))) OR ( 2 ca2 compared case netw ))*.