Talvez deva tentar algumas variações de ortografia:
nacl complex » nac56 complex (Expandir a Pesquisa), al complex (Expandir a Pesquisa), all complex (Expandir a Pesquisa)
tail complex » oil complex (Expandir a Pesquisa), metal complex (Expandir a Pesquisa), basal complex (Expandir a Pesquisa)
complex can » complex care (Expandir a Pesquisa), complex cell (Expandir a Pesquisa)
natl clamp » tail clamp (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), a nacl (Expandir a Pesquisa)
3 tail » h3 tail (Expandir a Pesquisa), 3 tails (Expandir a Pesquisa)
_ natl » _ natal (Expandir a Pesquisa), _ nat'l (Expandir a Pesquisa), _ nato (Expandir a Pesquisa)
a netw » a neto (Expandir a Pesquisa), a neta (Expandir a Pesquisa), a netb (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": "(((( 3 nacl complex can new ) OR ( 3 tail complex case new ))) OR ( _ natl clamp a netw ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 nacl complex can new ) OR ( 3 tail complex case new ))) OR ( _ natl clamp a netw ))*.