Talvez deva tentar algumas variações de ortografia:
ng2 complex » g2 complex (Expandir a Pesquisa), n2 complex (Expandir a Pesquisa), ni2 complex (Expandir a Pesquisa)
complex can » complex case (Expandir a Pesquisa), complex care (Expandir a Pesquisa), complex cell (Expandir a Pesquisa)
nail comp » nail bomb (Expandir a Pesquisa), nail company (Expandir a Pesquisa), nail complex (Expandir a Pesquisa)
dna clamp » a clamp (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), comp la (Expandir a Pesquisa)
can netw » can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can now (Expandir a Pesquisa)
3 nail » _ nail (Expandir a Pesquisa), a nail (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
3 ng2 » _ ng2 (Expandir a Pesquisa), 2 ng2 (Expandir a Pesquisa), 3 no2 (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 nail comp can new ) OR ( 3 ng2 complex can new ))) OR ( _ dna clamp can netw ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 nail comp can new ) OR ( 3 ng2 complex can new ))) OR ( _ dna clamp can netw ))*.