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)
meal compared » meat compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa), ml 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)
based snow » based snp (Expandir a Pesquisa)
j meal » j meale (Expandir a Pesquisa), j mead (Expandir a Pesquisa), j meas (Expandir a Pesquisa)
j pcr » _ pcr (Expandir a Pesquisa), a pcr (Expandir a Pesquisa), 2 pcr (Expandir a Pesquisa)
j ut » j u (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 ut computer based snow ) or ((( j meal compared cases new ) or ( j pcr compared law non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j ut computer based snow ) OR ((( j meal compared cases new ) OR ( j pcr compared law non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j ut computer based snow ) or ((( j meal compared cases new ) or ( j pcr compared law non ))))*.