Talvez deva tentar algumas variações de ortografia:
dna clamp » a clamp (Expandir a Pesquisa)
code cana » code can (Expandir a Pesquisa), code case (Expandir a Pesquisa), code cdma (Expandir a Pesquisa)
led code » red code (Expandir a Pesquisa), led model (Expandir a Pesquisa), land code (Expandir a Pesquisa)
cana now » canal now (Expandir a Pesquisa), can now (Expandir a Pesquisa), canada now (Expandir a Pesquisa)
amp amp » amp camp (Expandir a Pesquisa), gmp amp (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
j nart » _ nart (Expandir a Pesquisa), j nare (Expandir a Pesquisa), j narr (Expandir a Pesquisa)
amp am » camp am (Expandir a Pesquisa), amp al (Expandir a Pesquisa), amp camp (Expandir a Pesquisa)
a none » a nona (Expandir a Pesquisa)
j dna » _ dna (Expandir a Pesquisa), a dna (Expandir a Pesquisa), 1 dna (Expandir a Pesquisa)
j led » j ledo (Expandir a Pesquisa), j lee (Expandir a Pesquisa), _ led (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j nart ((amp am) or (amp amp)) now ) or ((( j dna clamp a none ) or ( j led code cana now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nart ((amp am) OR (amp amp)) now ) OR ((( j dna clamp a none ) OR ( j led code cana now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nart ((amp am) or (amp amp)) now ) or ((( j dna clamp a none ) or ( j led code cana now ))))*.