Talvez deva tentar algumas variações de ortografia:
natal computer » vital computer (Expandir a Pesquisa), national computer (Expandir a Pesquisa), annual computer (Expandir a Pesquisa)
computer based » computer aided (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
can newly » a newly (Expandir a Pesquisa), men newly (Expandir a Pesquisa), may newly (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
nat camp » fat camp (Expandir a Pesquisa), cpt camp (Expandir a Pesquisa), ca2 camp (Expandir a Pesquisa)
camp can » camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa), comp can (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
_ natal » _ natural (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ nat camp can new ) OR ( j a clamp can newly ))) OR ( _ natal computer based now ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ nat camp can new ) or ( j a clamp can newly ))) or ( _ natal computer based now ))*.