Talvez deva tentar algumas variações de ortografia:
tunis computer » studies computer (Expandir a Pesquisa), tetris computer (Expandir a Pesquisa), things computer (Expandir a Pesquisa)
computer based » computer aided (Expandir a Pesquisa)
nacl compared » acl compared (Expandir a Pesquisa), small compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa)
computer can » computers can (Expandir a Pesquisa), computer case (Expandir a Pesquisa), computer a (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
de tunis » de tuneis (Expandir a Pesquisa), de tunes (Expandir a Pesquisa), de tunisie (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
a vhdl » _ vhdl (Expandir a Pesquisa), a vhl (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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: (((( a vhdl computer based now ) or ( de tunis computer can non ))) or ( _ nacl compared a now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a vhdl computer based now ) OR ( de tunis computer can non ))) OR ( _ nacl compared a now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a vhdl computer based now ) or ( de tunis computer can non ))) or ( _ nacl compared a now ))*.