Talvez deva tentar algumas variações de ortografia:
natal compared » nacl compared (Expandir a Pesquisa), fetal compared (Expandir a Pesquisa), metal compared (Expandir a Pesquisa)
computer based » computer aided (Expandir a Pesquisa)
call computer » small computer (Expandir a Pesquisa), scale computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
_ natal » _ natural (Expandir a Pesquisa)
com can » com cana (Expandir a Pesquisa), com cant (Expandir a Pesquisa), com cal (Expandir a Pesquisa)
j call » j calle (Expandir a Pesquisa), j calls (Expandir a Pesquisa), j calu (Expandir a Pesquisa)
st com » smt com (Expandir a Pesquisa), sst com (Expandir a Pesquisa), st como (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 call computer based now ) or ( _ natal compared _ new ))) or ( j st com can newts ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j call computer based now ) OR ( _ natal compared _ new ))) OR ( j st com can newts ))*.