Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
compared cases » compared case (Expandir a Pesquisa), collared cases (Expandir a Pesquisa), compares bases (Expandir a Pesquisa)
lead compared » lean compared (Expandir a Pesquisa), head compared (Expandir a Pesquisa), blend compared (Expandir a Pesquisa)
pcr compared » pcr combined (Expandir a Pesquisa)
compared law » compared a (Expandir a Pesquisa), compared can (Expandir a Pesquisa), compared _ (Expandir a Pesquisa)
ct computer » cat computer (Expandir a Pesquisa), ut computer (Expandir a Pesquisa), ct computed (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
j lead » j leal (Expandir a Pesquisa), j leak (Expandir a Pesquisa), j lean (Expandir a Pesquisa)
j pcr » _ pcr (Expandir a Pesquisa), a pcr (Expandir a Pesquisa), 2 pcr (Expandir a Pesquisa)
j ct » j c (Expandir a Pesquisa), j et (Expandir a Pesquisa), j st (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 ct computer based now ) or ((( j lead compared cases new ) or ( j pcr compared law non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j ct computer based now ) OR ((( j lead compared cases new ) OR ( j pcr compared law non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j ct computer based now ) or ((( j lead compared cases new ) or ( j pcr compared law non ))))*.