Talvez deva tentar algumas variações de ortografia:
early computed » energy computed (Expandir a Pesquisa), ray computed (Expandir a Pesquisa)
copper traces » copper trace (Expandir a Pesquisa), copper trans (Expandir a Pesquisa), copper surfaces (Expandir a Pesquisa)
barrera comp » barrera con (Expandir a Pesquisa), barrera campos (Expandir a Pesquisa), barrera cobos (Expandir a Pesquisa)
traces ngoc » traces non (Expandir a Pesquisa), francis ngoc (Expandir a Pesquisa)
computed a » computed _ (Expandir a Pesquisa), computed x (Expandir a Pesquisa), computed via (Expandir a Pesquisa)
j barrera » a barrera (Expandir a Pesquisa), f barrera (Expandir a Pesquisa), j barreiro (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
l copper » al copper (Expandir a Pesquisa), ol copper (Expandir a Pesquisa), _ copper (Expandir a Pesquisa)
j early » j earley (Expandir a Pesquisa), 1 early (Expandir a Pesquisa), 3 early (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 early computed a neto ) or ( j barrera comp can newts ))) or ( _ l copper traces ngoc ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j early computed a neto ) OR ( j barrera comp can newts ))) OR ( _ l copper traces ngoc )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j early computed a neto ) or ( j barrera comp can newts ))) or ( _ l copper traces ngoc ))*.