Talvez deva tentar algumas variações de ortografia:
metals compared » meals compared (Expandir a Pesquisa), methods compared (Expandir a Pesquisa), cereals compared (Expandir a Pesquisa)
computer based » computer aided (Expandir a Pesquisa)
compared case » compared cases (Expandir a Pesquisa), compared can (Expandir a Pesquisa), companies case (Expandir a Pesquisa)
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), icat computer (Expandir a Pesquisa)
war compared » ward compared (Expandir a Pesquisa), wars compared (Expandir a Pesquisa), wart compared (Expandir a Pesquisa)
j metals » _ metals (Expandir a Pesquisa), 1 metals (Expandir a Pesquisa), 4 metals (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), a nat (Expandir a Pesquisa)
c war » c ward (Expandir a Pesquisa), c ware (Expandir a Pesquisa), _ war (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j nat computer based non ) or ((( j metals compared case new ) or ( c war compared _ non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nat computer based non ) OR ((( j metals compared case new ) OR ( c war compared _ non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nat computer based non ) or ((( j metals compared case new ) or ( c war compared _ non ))))*.