Talvez deva tentar algumas variações de ortografia:
compares bases » compared cases (Expandir a Pesquisa), comparison bases (Expandir a Pesquisa), companies based (Expandir a Pesquisa)
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
hdl computer » vhdl computer (Expandir a Pesquisa), hill computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa)
cat compares » cat compared (Expandir a Pesquisa), cast compared (Expandir a Pesquisa), cats compared (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
bases now » cases now (Expandir a Pesquisa), bases n (Expandir a Pesquisa), bases com (Expandir a Pesquisa)
j units » 2 units (Expandir a Pesquisa), 1 units (Expandir a Pesquisa), 4 units (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
3 hdl » _ hdl (Expandir a Pesquisa), c hdl (Expandir a Pesquisa), 1 hdl (Expandir a Pesquisa)
j cat » _ cat (Expandir a Pesquisa), a cat (Expandir a Pesquisa), j cao (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 units computers can now ) or ( 3 hdl computer a new ))) or ( j cat compares bases now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j units computers can now ) OR ( 3 hdl computer a new ))) OR ( j cat compares bases now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j units computers can now ) or ( 3 hdl computer a new ))) or ( j cat compares bases now ))*.