Talvez deva tentar algumas variações de ortografia:
computer course » computer courses (Expandir a Pesquisa), computer discourse (Expandir a Pesquisa), computing course (Expandir a Pesquisa)
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), icat computer (Expandir a Pesquisa)
course new » course news (Expandir a Pesquisa), courses new (Expandir a Pesquisa), course na (Expandir a Pesquisa)
combe can » combe juan (Expandir a Pesquisa), combe jean (Expandir a Pesquisa), combe c (Expandir a Pesquisa)
li combe » la combe (Expandir a Pesquisa), _ combe (Expandir a Pesquisa), dr combe (Expandir a Pesquisa)
can netw » can new (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can now (Expandir a Pesquisa)
da combe » la combe (Expandir a Pesquisa), da como (Expandir a Pesquisa), da com (Expandir a Pesquisa)
can net » can next (Expandir a Pesquisa), can new (Expandir a Pesquisa), dan net (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (Expandir a Pesquisa)
j li » j l (Expandir a Pesquisa), j i (Expandir a Pesquisa)
j da » j a (Expandir a Pesquisa), j d (Expandir a Pesquisa), j de (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 li combe can netw ) or ( j da combe can net ))) or ( j nat computer course new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j li combe can netw ) OR ( j da combe can net ))) OR ( j nat computer course new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j li combe can netw ) or ( j da combe can net ))) or ( j nat computer course new ))*.