Talvez deva tentar algumas variações de ortografia:
computer model » computer modeling (Expandir a Pesquisa), computer modelling (Expandir a Pesquisa)
unit computer » unit computed (Expandir a Pesquisa), units computers (Expandir a Pesquisa), tunis computer (Expandir a Pesquisa)
apl computer » al computer (Expandir a Pesquisa), maple computer (Expandir a Pesquisa), call computer (Expandir a Pesquisa)
nat compare » fat compared (Expandir a Pesquisa), rat compared (Expandir a Pesquisa), rate compare (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
model now » model new (Expandir a Pesquisa), model non (Expandir a Pesquisa), models know (Expandir a Pesquisa)
compare a » compare _ (Expandir a Pesquisa)
j unit » _ unit (Expandir a Pesquisa), a unit (Expandir a Pesquisa), 3 unit (Expandir a Pesquisa)
j apl » j appl (Expandir a Pesquisa), _ apl (Expandir a Pesquisa), c apl (Expandir a Pesquisa)
_ nat » _ net (Expandir a Pesquisa), _ nad (Expandir a Pesquisa), _ nab (Expandir a Pesquisa)
a now » a non (Expandir a Pesquisa), _ now (Expandir a Pesquisa), a nos (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 apl computer model now ) or ( j unit computer a new ))) or ( _ nat compare a now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j apl computer model now ) OR ( j unit computer a new ))) OR ( _ nat compare a now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j apl computer model now ) or ( j unit computer a new ))) or ( _ nat compare a now ))*.