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 his » nat hist (Expandir a Pesquisa), nat hiv (Expandir a Pesquisa), tait his (Expandir a Pesquisa)
his can » bis can (Expandir a Pesquisa), cis can (Expandir a Pesquisa), his cat (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
clamp j » clamp _ (Expandir a Pesquisa)
a nucl » a null (Expandir a Pesquisa), 3 nucl (Expandir a Pesquisa), a nuck (Expandir a Pesquisa)
a east » ga east (Expandir a Pesquisa), _ east (Expandir a Pesquisa), a easy (Expandir a Pesquisa)
el now » el non (Expandir a Pesquisa), el nou (Expandir a Pesquisa), el nom (Expandir a Pesquisa)
el noa » del noa (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 his can now ) or ((( a nucl clamp j noh ) or ( a east congo ((el now) OR (el noa)) ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nat his can now ) OR ((( a nucl clamp j noh ) OR ( a east congo ((el now) OR (el noa)) )))).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j nat his can now ) or ((( a nucl clamp j noh ) or ( a east congo ((el now) OR (el noa)) ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nat his can now ) or ((( a nucl clamp j noh ) or ( a east congo ((el now) OR (el noa)) ))))*.