Talvez deva tentar algumas variações de ortografia:
vhdl computers » vhdl computer (Expandir a Pesquisa), held computers (Expandir a Pesquisa), how computers (Expandir a Pesquisa)
comparing case » comparing cancer (Expandir a Pesquisa), compelling case (Expandir a Pesquisa), comparing climate (Expandir a Pesquisa)
daily compared » early compared (Expandir a Pesquisa), elderly compared (Expandir a Pesquisa)
all comparing » al comparing (Expandir a Pesquisa), ill comparing (Expandir a Pesquisa), small comparing (Expandir a Pesquisa)
computers a » computers _ (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
a ngoc » ha ngoc (Expandir a Pesquisa), ta ngoc (Expandir a Pesquisa), la ngoc (Expandir a Pesquisa)
3 all » 3 ally (Expandir a Pesquisa), _ all (Expandir a Pesquisa), b all (Expandir a Pesquisa)
a non » _ non (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: (( _ vhdl computers a ngoc ) or ((( 3 all comparing case now ) or ( _ daily compared a non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ vhdl computers a ngoc ) OR ((( 3 all comparing case now ) OR ( _ daily compared a non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ vhdl computers a ngoc ) or ((( 3 all comparing case now ) or ( _ daily compared a non ))))*.