Talvez deva tentar algumas variações de ortografia:
cuong van » duong van (Expandir a Pesquisa), tuong van (Expandir a Pesquisa), luong van (Expandir a Pesquisa)
anh cuong » manh cuong (Expandir a Pesquisa), anh duong (Expandir a Pesquisa), anh luong (Expandir a Pesquisa)
can ngoc » tran ngoc (Expandir a Pesquisa), phan ngoc (Expandir a Pesquisa), bao ngoc (Expandir a Pesquisa)
van ngoc » tran ngoc (Expandir a Pesquisa), vu ngoc (Expandir a Pesquisa), bao ngoc (Expandir a Pesquisa)
rat amp » rat ampa (Expandir a Pesquisa), mat amp (Expandir a Pesquisa), fat amp (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa)
a clamp » _ clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa), a claims (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
a non » _ non (Expandir a Pesquisa)
j anh » _ anh (Expandir a Pesquisa), j ann (Expandir a Pesquisa), d anh (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: (( _ rat amp ((can now) OR (can ngoc)) ) or ((( j a clamp a non ) or ( j anh cuong van ngoc ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ rat amp ((can now) OR (can ngoc)) ) OR ((( j a clamp a non ) OR ( j anh cuong van ngoc )))).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( _ rat amp ((can now) OR (can ngoc)) ) or ((( j a clamp a non ) or ( j anh cuong van ngoc ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ rat amp ((can now) OR (can ngoc)) ) or ((( j a clamp a non ) or ( j anh cuong van ngoc ))))*.