Talvez deva tentar algumas variações de ortografia:
maple computer » apple computer (Expandir a Pesquisa), simple computer (Expandir a Pesquisa), mobile computer (Expandir a Pesquisa)
compared case » compared cases (Expandir a Pesquisa), compared can (Expandir a Pesquisa), companies case (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer can (Expandir a Pesquisa)
fat compared » rat compared (Expandir a Pesquisa), meat compared (Expandir a Pesquisa), gait compared (Expandir a Pesquisa)
clamp mum » clamp cum (Expandir a Pesquisa), clamp m (Expandir a Pesquisa), clamp em (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case note (Expandir a Pesquisa)
mum net » mom net (Expandir a Pesquisa)
j maple » _ maple (Expandir a Pesquisa)
j narr » l narr (Expandir a Pesquisa), j nair (Expandir a Pesquisa), j nare (Expandir a Pesquisa)
j fat » j fath (Expandir a Pesquisa), _ fat (Expandir a Pesquisa), a fat (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j fat compared case new ) OR ( j narr clamp mum net ))) OR ( j maple computer case now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j fat compared case new ) OR ( j narr clamp mum net ))) OR ( j maple computer case now ))*.