Talvez deva tentar algumas variações de ortografia:
hearn camp » heart camp (Expandir a Pesquisa), heart amp (Expandir a Pesquisa), hearn amy (Expandir a Pesquisa)
dna clamp » a clamp (Expandir a Pesquisa)
van ngoc » tran ngoc (Expandir a Pesquisa), vu ngoc (Expandir a Pesquisa), ha ngoc (Expandir a Pesquisa)
j hearn » j hearne (Expandir a Pesquisa), j heard (Expandir a Pesquisa), j hearing (Expandir a Pesquisa)
camp ca » camp a (Expandir a Pesquisa), camp c (Expandir a Pesquisa), camp camp (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
ca now » can now (Expandir a Pesquisa), ca no3 (Expandir a Pesquisa), ca non (Expandir a Pesquisa)
e cong » e congo (Expandir a Pesquisa), e cone (Expandir a Pesquisa), e congly (Expandir a Pesquisa)
1 dna » _ dna (Expandir a Pesquisa), a dna (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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 hearn camp ca now ) or ((( 1 dna clamp a now ) or ( j e cong ((van ngoc) OR (bao ngoc)) ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j hearn camp ca now ) OR ((( 1 dna clamp a now ) OR ( j e cong ((van ngoc) OR (bao ngoc)) ))))*.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j hearn camp ca now ) or ((( 1 dna clamp a now ) or ( j e cong ((van ngoc) OR (bao ngoc)) ))))*".