Talvez deva tentar algumas variações de ortografia:
maple computer » apple computer (Expandir a Pesquisa), simple computer (Expandir a Pesquisa), mobile computer (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer age (Expandir a Pesquisa), computer code (Expandir a Pesquisa)
nat compared » rat compared (Expandir a Pesquisa), cat compared (Expandir a Pesquisa), fat compared (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
nair clamp » nair alap (Expandir a Pesquisa)
clamp mum » clamp cum (Expandir a Pesquisa), clamp m (Expandir a Pesquisa), clamp em (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
mum net » mom net (Expandir a Pesquisa)
j maple » _ maple (Expandir a Pesquisa)
j nair » _ nair (Expandir a Pesquisa), a nair (Expandir a Pesquisa), j narr (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), j nay (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 nat compared can now ) OR ( j nair clamp mum net ))) OR ( j maple computer case now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat compared can now ) OR ( j nair clamp mum net ))) OR ( j maple computer case now ))*.