Talvez deva tentar algumas variações de ortografia:
comparing case » comparing cancer (Expandir a Pesquisa), compelling case (Expandir a Pesquisa), comparison case (Expandir a Pesquisa)
nacl compared » al compared (Expandir a Pesquisa), panel compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa)
art comparing » rct comparing (Expandir a Pesquisa), ct comparing (Expandir a Pesquisa), fat comparing (Expandir a Pesquisa)
compared can » compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa), companies can (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
camp can » clamp can (Expandir a Pesquisa), camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa)
db camp » de camp (Expandir a Pesquisa), day camp (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
c art » _ art (Expandir a Pesquisa), c arm (Expandir a Pesquisa), l art (Expandir a Pesquisa)
_ db » _ b (Expandir a Pesquisa), _ d (Expandir a Pesquisa), _ de (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: (((( 3 nacl compared can new ) or ( c art comparing case new ))) or ( _ db camp can near ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( 3 nacl compared can new ) OR ( c art comparing case new ))) OR ( _ db camp can near )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 nacl compared can new ) or ( c art comparing case new ))) or ( _ db camp can near ))*.