Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
beams compared » mems compared (Expandir a Pesquisa), bypass compared (Expandir a Pesquisa), blacks compared (Expandir a Pesquisa)
fast computer » cost computer (Expandir a Pesquisa), best computer (Expandir a Pesquisa), fast computing (Expandir a Pesquisa)
compared case » compared cases (Expandir a Pesquisa), compared can (Expandir a Pesquisa), companies case (Expandir a Pesquisa)
narr company » air company (Expandir a Pesquisa), care company (Expandir a Pesquisa), bearer company (Expandir a Pesquisa)
company a » company _ (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
2 beams » a beams (Expandir a Pesquisa)
e fast » de fast (Expandir a Pesquisa)
j narr » l narr (Expandir a Pesquisa), j nair (Expandir a Pesquisa), j nare (Expandir a Pesquisa)
a non » _ non (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: (( e fast computer based non ) or ((( 2 beams compared case new ) or ( j narr company a non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( e fast computer based non ) OR ((( 2 beams compared case new ) OR ( j narr company a non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( e fast computer based non ) or ((( 2 beams compared case new ) or ( j narr company a non ))))*.