Talvez deva tentar algumas variações de ortografia:
nail complex » snail complex (Expandir a Pesquisa), tail complex (Expandir a Pesquisa), snail1 complex (Expandir a Pesquisa)
complex ca » complex can (Expandir a Pesquisa), complex c (Expandir a Pesquisa), complex cc (Expandir a Pesquisa)
rnap clamp » dna clamp (Expandir a Pesquisa), ap clamp (Expandir a Pesquisa), dnan clamp (Expandir a Pesquisa)
oil bomb » oil body (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
3 nail » _ nail (Expandir a Pesquisa), a nail (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
ca now » ca no3 (Expandir a Pesquisa), ca non (Expandir a Pesquisa)
bomb a » bomb _ (Expandir a Pesquisa), bomb 1 (Expandir a Pesquisa), bomb 2 (Expandir a Pesquisa)
j rnap » _ rnap (Expandir a Pesquisa), a rnap (Expandir a Pesquisa), 5 rnap (Expandir a Pesquisa)
a neta » a neto (Expandir a Pesquisa), a nectar (Expandir a Pesquisa)
3 oil » 3 oils (Expandir a Pesquisa), _ oil (Expandir a Pesquisa), l oil (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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 complex ca now ) OR ( 3 oil bomb a now ))) OR ( j rnap clamp a neta ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 nail complex ca now ) OR ( 3 oil bomb a now ))) OR ( j rnap clamp a neta ))*.