Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
stem compared » stems compared (Expandir a Pesquisa), system compared (Expandir a Pesquisa), sperm compared (Expandir a Pesquisa)
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), icat computer (Expandir a Pesquisa)
based newts » based news (Expandir a Pesquisa), based newton (Expandir a Pesquisa), based next (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
l clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), a clamp (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa)
j stem » j stam (Expandir a Pesquisa), j step (Expandir a Pesquisa), j stec (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.

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