Talvez deva tentar algumas variações de ortografia:
rath compared » rats compared (Expandir a Pesquisa), rate compared (Expandir a Pesquisa), rat compared (Expandir a Pesquisa)
head compared » heat compared (Expandir a Pesquisa), lead compared (Expandir a Pesquisa), bread compared (Expandir a Pesquisa)
nat computers » what computers (Expandir a Pesquisa), can computers (Expandir a Pesquisa), iet computers (Expandir a Pesquisa)
compared can » compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa), companies can (Expandir a Pesquisa)
computers a » computers _ (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), a 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 rath compared can newts ) OR ( j head compared can now ))) OR ( j nat computers a new ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j rath compared can newts ) OR ( j head compared can now ))) OR ( j nat computers a new ))*.