Talvez deva tentar algumas variações de ortografia:
mobile computer » mobile computing (Expandir a Pesquisa), mobile complex (Expandir a Pesquisa)
natl compared » nacl compared (Expandir a Pesquisa), nail compared (Expandir a Pesquisa), acl compared (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer age (Expandir a Pesquisa), computer code (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
claims can » claims cash (Expandir a Pesquisa), claims a (Expandir a Pesquisa), claims mar (Expandir a Pesquisa)
can newts » can newly (Expandir a Pesquisa)
a claims » _ claims (Expandir a Pesquisa)
j mobile » f mobile (Expandir a Pesquisa), go mobile (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j nat (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 natl compared can new ) or ( j a claims can newts ))) or ( j mobile computer case now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl compared can new ) OR ( j a claims can newts ))) OR ( j mobile computer case now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl compared can new ) or ( j a claims can newts ))) or ( j mobile computer case now ))*.