Talvez deva tentar algumas variações de ortografia:
rate compared » rates compared (Expandir a Pesquisa), rats compared (Expandir a Pesquisa), care compared (Expandir a Pesquisa)
compared flow » compared law (Expandir a Pesquisa), compare low (Expandir a Pesquisa), compare slow (Expandir a Pesquisa)
flow noise » low noise (Expandir a Pesquisa), how noise (Expandir a Pesquisa), law noise (Expandir a Pesquisa)
nat compr » la compr (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
compr dan » comer dan (Expandir a Pesquisa), compra das (Expandir a Pesquisa), compra da (Expandir a Pesquisa)
can neto » can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can new (Expandir a Pesquisa)
a compr » a compra (Expandir a Pesquisa), la compr (Expandir a Pesquisa), a comp (Expandir a Pesquisa)
dan non » than non (Expandir a Pesquisa), dan ning (Expandir a Pesquisa)
j rate » j rane (Expandir a Pesquisa), j race (Expandir a Pesquisa), j rath (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 neto ) OR ( j a compr dan non ))) OR ( j rate compared flow noise ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat compr can neto ) OR ( j a compr dan non ))) OR ( j rate compared flow noise ))*.