Talvez deva tentar algumas variações de ortografia:
phan ngoc » pham ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), ha ngoc (Expandir a Pesquisa)
nay clamp » dnan clamp (Expandir a Pesquisa), a clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
nat comp » et comp (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
can ngoc » van ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), bao ngoc (Expandir a Pesquisa)
clamp ar » clamp a (Expandir a Pesquisa), clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
son phan » son chang (Expandir a Pesquisa)
ar ngoc » bao ngoc (Expandir a Pesquisa), van ngoc (Expandir a Pesquisa), anh ngoc (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (Expandir a Pesquisa)
j nay » j nagy (Expandir a Pesquisa), _ nay (Expandir a Pesquisa)
e son » e sons (Expandir a Pesquisa), e sono (Expandir a Pesquisa), e song (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 nat comp can ngoc ) or ((( j nay clamp ar ngoc ) or ( j e son phan ngoc ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nat comp can ngoc ) OR ((( j nay clamp ar ngoc ) OR ( j e son phan ngoc )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nat comp can ngoc ) or ((( j nay clamp ar ngoc ) or ( j e son phan ngoc ))))*.