Talvez deva tentar algumas variações de ortografia:
duty computer » dutch computer (Expandir a Pesquisa), uy computer (Expandir a Pesquisa), daily computer (Expandir a Pesquisa)
computer age » computer image (Expandir a Pesquisa), computer a (Expandir a Pesquisa), computer aided (Expandir a Pesquisa)
natl com » natal com (Expandir a Pesquisa), nat2 com (Expandir a Pesquisa), natal como (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa), can new (Expandir a Pesquisa)
clamp ar » clamp a (Expandir a Pesquisa), clamp pcr (Expandir a Pesquisa), clamp _ (Expandir a Pesquisa)
ar newts » can newts (Expandir a Pesquisa), _ newts (Expandir a Pesquisa), war news (Expandir a Pesquisa)
com can » com cana (Expandir a Pesquisa), com cant (Expandir a Pesquisa), com cal (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), c clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
a duty » _ duty (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: (((( _ natl com can near ) or ( j a clamp ar newts ))) or ( a duty computer age new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ natl com can near ) OR ( j a clamp ar newts ))) OR ( a duty computer age new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ natl com can near ) or ( j a clamp ar newts ))) or ( a duty computer age new ))*.