Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
nair computer » rairo computer (Expandir a Pesquisa), brain computer (Expandir a Pesquisa), basic computer (Expandir a Pesquisa)
rats compare » rats compared (Expandir a Pesquisa), rate compare (Expandir a Pesquisa), rates compared (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
a newts » _ newts (Expandir a Pesquisa), a news (Expandir a Pesquisa), a newt (Expandir a Pesquisa)
j rats » j rath (Expandir a Pesquisa), j raes (Expandir a Pesquisa), rij rats (Expandir a Pesquisa)
3 nair » p nair (Expandir a Pesquisa), b nair (Expandir a Pesquisa), m nair (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 rats compare _ new ) OR ( j a clamp a newts ))) OR ( 3 nair computer based now ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j rats compare _ new ) or ( j a clamp a newts ))) or ( 3 nair computer based now ))*.