Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
stay compared » assay compared (Expandir a Pesquisa), state compared (Expandir a Pesquisa), spray compared (Expandir a Pesquisa)
natl computer » dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
narr clamp » arm clamp (Expandir a Pesquisa)
based next » based nested (Expandir a Pesquisa)
clamp pcr » lamp pcr (Expandir a Pesquisa), amp pcr (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa)
pcr netw » pcr new (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j stay » j stacy (Expandir a Pesquisa), j stan (Expandir a Pesquisa), j stam (Expandir a Pesquisa)
j narr » l narr (Expandir a Pesquisa), j nair (Expandir a Pesquisa), j nasr (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j stay compared can now ) OR ( j narr clamp pcr netw ))) OR ( j natl computer based next ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j stay compared can now ) or ( j narr clamp pcr netw ))) or ( j natl computer based next ))*.