Talvez deva tentar algumas variações de ortografia:
nacl comet » nacl content (Expandir a Pesquisa), nacl complex (Expandir a Pesquisa)
dnan clamp » dna clamp (Expandir a Pesquisa), dna clamps (Expandir a Pesquisa), can clamp (Expandir a Pesquisa)
comet can » comes can (Expandir a Pesquisa), comet jean (Expandir a Pesquisa), ahmet can (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
comet van » comer vann (Expandir a Pesquisa), comet jean (Expandir a Pesquisa), comet a (Expandir a Pesquisa)
can neto » can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can near (Expandir a Pesquisa)
l comet » l comer (Expandir a Pesquisa), gel comet (Expandir a Pesquisa), l collet (Expandir a Pesquisa)
van ngo » van ngoc (Expandir a Pesquisa)
5 dnan » 5 dna (Expandir a Pesquisa), _ dnan (Expandir a Pesquisa), 5 dnai (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m 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 l comet can neto ) OR ((( 5 dnan clamp can new ) OR ( 3 nacl comet van ngo ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comet can neto ) OR ((( 5 dnan clamp can new ) OR ( 3 nacl comet van ngo ))))*.