Talvez deva tentar algumas variações de ortografia:
east congo » fast congo (Expandir a Pesquisa), east mongol (Expandir a Pesquisa), west congo (Expandir a Pesquisa)
acid clamp » acid cla (Expandir a Pesquisa)
chimp can » chip can (Expandir a Pesquisa), camp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
congo cal » congo cas (Expandir a Pesquisa), congo scale (Expandir a Pesquisa), congo care (Expandir a Pesquisa)
can ngoc » van ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), phan ngoc (Expandir a Pesquisa)
clamp j » clamp _ (Expandir a Pesquisa)
cal now » call now (Expandir a Pesquisa), canal now (Expandir a Pesquisa), cell now (Expandir a Pesquisa)
a acid » a acido (Expandir a Pesquisa)
j east » _ east (Expandir a Pesquisa), c east (Expandir a Pesquisa), a east (Expandir a Pesquisa)
e nat » e nata (Expandir a Pesquisa), e nas (Expandir a Pesquisa), _ 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: (( ((e nat) or (e nao)) chimp can ngoc ) or ((( a acid clamp j noh ) or ( j east congo cal now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( ((e nat) OR (e nao)) chimp can ngoc ) OR ((( a acid clamp j noh ) OR ( j east congo cal now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( ((e nat) or (e nao)) chimp can ngoc ) or ((( a acid clamp j noh ) or ( j east congo cal now ))))*.