Talvez deva tentar algumas variações de ortografia:
digital computer » digital computers (Expandir a Pesquisa), digital competence (Expandir a Pesquisa)
nadal compared » nacl compared (Expandir a Pesquisa), nail compared (Expandir a Pesquisa), canada compared (Expandir a Pesquisa)
computer based » computer aided (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)
based snow » based snp (Expandir a Pesquisa)
j digital » ubj digital (Expandir a Pesquisa), npj digital (Expandir a Pesquisa), nrj digital (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa)
a claims » _ claims (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j nadal compared can near ) OR ( j a claims can new ))) OR ( j digital computer based snow ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nadal compared can near ) or ( j a claims can new ))) or ( j digital computer based snow ))*.