Talvez deva tentar algumas variações de ortografia:
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
nacl complex » nac56 complex (Expandir a Pesquisa), caml complex (Expandir a Pesquisa), all complex (Expandir a Pesquisa)
complex can » complex case (Expandir a Pesquisa), complex care (Expandir a Pesquisa), complex cancer (Expandir a Pesquisa)
a computer » _ computer (Expandir a Pesquisa)
nart camp » heart camp (Expandir a Pesquisa), akt camp (Expandir a Pesquisa), fat camp (Expandir a Pesquisa)
can netw » can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can now (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)
j nart » _ nart (Expandir a Pesquisa), j nare (Expandir a Pesquisa), j narr (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), 3.5 nacl (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 a computer can netw ) OR ( j nart camp can near ))) OR ( 3 nacl complex can new ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j a computer can netw ) OR ( j nart camp can near ))) OR ( 3 nacl complex can new ))*.