Talvez deva tentar algumas variações de ortografia:
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer can (Expandir a Pesquisa)
nacl compared » acl compared (Expandir a Pesquisa), small compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
nacl compare » acl compared (Expandir a Pesquisa), penal compare (Expandir a Pesquisa), del compare (Expandir a Pesquisa)
case severe » cause severe (Expandir a Pesquisa), have severe (Expandir a Pesquisa), rare severe (Expandir a Pesquisa)
5 nacl » 15 nacl (Expandir a Pesquisa), _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
j ut » j out (Expandir a Pesquisa), j rut (Expandir a Pesquisa), j u (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j ut computer case severe ) OR ((( 5 nacl compared can new ) OR ( 3 nacl compare _ now ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j ut computer case severe ) OR ((( 5 nacl compared can new ) OR ( 3 nacl compare _ now ))))*.