Talvez deva tentar algumas variações de ortografia:
cant ngoc » van ngoc (Expandir a Pesquisa), anh ngoc (Expandir a Pesquisa), cao ngoc (Expandir a Pesquisa)
can ngoc » van ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), phan ngoc (Expandir a Pesquisa)
nart amp » mart amp (Expandir a Pesquisa), art amp (Expandir a Pesquisa), narc amp (Expandir a Pesquisa)
com cant » com cana (Expandir a Pesquisa), com cantos (Expandir a Pesquisa), com carne (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa)
class a » class _ (Expandir a Pesquisa)
j nart » _ nart (Expandir a Pesquisa), j nare (Expandir a Pesquisa), j narr (Expandir a Pesquisa)
et com » et comb (Expandir a Pesquisa), et comp (Expandir a Pesquisa), et col (Expandir a Pesquisa)
j new » a new (Expandir a Pesquisa), _ new (Expandir a Pesquisa), 2 new (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (Expandir a Pesquisa)
j et » j e (Expandir a Pesquisa), j st (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 nart amp ((can now) OR (can ngoc)) ) or ((( j new class a now ) or ( j et com cant ngoc ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nart amp ((can now) OR (can ngoc)) ) OR ((( j new class a now ) OR ( j et com cant ngoc ))))*.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j nart amp ((can now) OR (can ngoc)) ) or ((( j new class a now ) or ( j et com cant ngoc ))))*".