Talvez deva tentar algumas variações de ortografia:
computer classes » computer clusters (Expandir a Pesquisa), computer cluster (Expandir a Pesquisa), computer case (Expandir a Pesquisa)
nacl computer » dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
classes now » classes new (Expandir a Pesquisa), classes nos (Expandir a Pesquisa), classes na (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
dna clamp » a clamp (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
el camp » el campo (Expandir a Pesquisa), del camp (Expandir a Pesquisa), el cap (Expandir a Pesquisa)
camp c » champ c (Expandir a Pesquisa), camp _ (Expandir a Pesquisa), camp a (Expandir a Pesquisa)
c near » c neal (Expandir a Pesquisa), b.c near (Expandir a Pesquisa)
a dna » _ dna (Expandir a Pesquisa)
j el » j l (Expandir a Pesquisa), j e (Expandir a Pesquisa), j al (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 el camp c near ) or ( a dna clamp can newts ))) or ( _ nacl computer classes now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j el camp c near ) OR ( a dna clamp can newts ))) OR ( _ nacl computer classes now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j el camp c near ) or ( a dna clamp can newts ))) or ( _ nacl computer classes now ))*.