Talvez deva tentar algumas variações de ortografia:
level compared » levels compared (Expandir a Pesquisa), model compared (Expandir a Pesquisa), level comparison (Expandir a Pesquisa)
natl computer » dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
camp can » clamp can (Expandir a Pesquisa), camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa)
can netw » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j level » j levell (Expandir a Pesquisa), j levels (Expandir a Pesquisa), j levelt (Expandir a Pesquisa)
ac camp » a camp (Expandir a Pesquisa), c camp (Expandir a Pesquisa), amp camp (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)
_ ac » _ rac (Expandir a Pesquisa), _ a (Expandir a Pesquisa), _ c (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 natl computer can now ) or ( j level compared can now ))) or ( _ ac camp can netw ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl computer can now ) OR ( j level compared can now ))) OR ( _ ac camp can netw )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl computer can now ) or ( j level compared can now ))) or ( _ ac camp can netw ))*.