Talvez deva tentar algumas variações de ortografia:
dental computer » dental computed (Expandir a Pesquisa), digital computer (Expandir a Pesquisa), annual computer (Expandir a Pesquisa)
computer based » computer aided (Expandir a Pesquisa)
nacl compared » acl compared (Expandir a Pesquisa), small compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa)
race compare » rate compare (Expandir a Pesquisa), brace compared (Expandir a Pesquisa), grade compare (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
j nacl » _ nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa), a nacl (Expandir a Pesquisa)
j race » j racek (Expandir a Pesquisa), j rane (Expandir a Pesquisa), j rachel (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), a nos (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: (( a dental computer based now ) or ((( j nacl compared a now ) or ( j race compare _ now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a dental computer based now ) OR ((( j nacl compared a now ) OR ( j race compare _ now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a dental computer based now ) or ((( j nacl compared a now ) or ( j race compare _ now ))))*.