Talvez deva tentar algumas variações de ortografia:
natal comparing » data comparing (Expandir a Pesquisa), detail comparing (Expandir a Pesquisa), mental comparing (Expandir a Pesquisa)
comparing case » comparing cancer (Expandir a Pesquisa), compelling case (Expandir a Pesquisa), comparing climate (Expandir a Pesquisa)
computer age » computer image (Expandir a Pesquisa), computer a (Expandir a Pesquisa), computer aided (Expandir a Pesquisa)
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), icat computer (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (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)
_ natal » _ natural (Expandir a Pesquisa)
j natl » _ natl (Expandir a Pesquisa), j nail (Expandir a Pesquisa), j natali (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e 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 compr can now ) or ( j nat computer age new ))) or ( _ natal comparing case now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natl compr can now ) OR ( j nat computer age new ))) OR ( _ natal comparing case now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natl compr can now ) or ( j nat computer age new ))) or ( _ natal comparing case now ))*.