Talvez deva tentar algumas variações de ortografia:
east congo » fast congo (Expandir a Pesquisa), east mongol (Expandir a Pesquisa), west congo (Expandir a Pesquisa)
nat clamp » dnan clamp (Expandir a Pesquisa), a clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
congo cas » congo a (Expandir a Pesquisa), congo au (Expandir a Pesquisa), congo fan (Expandir a Pesquisa)
ear new » year new (Expandir a Pesquisa), near new (Expandir a Pesquisa), war new (Expandir a Pesquisa)
clamp j » clamp _ (Expandir a Pesquisa)
cas new » cast new (Expandir a Pesquisa), cas news (Expandir a Pesquisa), case new (Expandir a Pesquisa)
ar new » war new (Expandir a Pesquisa), bar new (Expandir a Pesquisa), air new (Expandir a Pesquisa)
a nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
c east » _ east (Expandir a Pesquisa), c easter (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (Expandir a Pesquisa)
j noh » _ noh (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 clamp ((ar new) OR (ear new)) ) or ((( a nacl clamp j noh ) or ( c east congo cas new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nat clamp ((ar new) OR (ear new)) ) OR ((( a nacl clamp j noh ) OR ( c east congo cas new )))).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j nat clamp ((ar new) OR (ear new)) ) or ((( a nacl clamp j noh ) or ( c east congo cas new ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nat clamp ((ar new) OR (ear new)) ) or ((( a nacl clamp j noh ) or ( c east congo cas new ))))*.