Talvez deva tentar algumas variações de ortografia:
code focal » core focal (Expandir a Pesquisa), nodule focal (Expandir a Pesquisa)
both camp » both ca (Expandir a Pesquisa)
focal non » local non (Expandir a Pesquisa)
camp can » clamp can (Expandir a Pesquisa), camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa)
led code » red code (Expandir a Pesquisa), led model (Expandir a Pesquisa), land code (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
clamp v » clamp vs (Expandir a Pesquisa), clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
j both » j botha (Expandir a Pesquisa), j booth (Expandir a Pesquisa), j bott (Expandir a Pesquisa)
v now » v nowe (Expandir a Pesquisa), _ now (Expandir a Pesquisa), v new (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 both camp can non ) or ((( j a clamp v now ) or ( j led code focal non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j both camp can non ) OR ((( j a clamp v now ) OR ( j led code focal non ))))*.