Talvez deva tentar algumas variações de ortografia:
cam ngoc » can ngoc (Expandir a Pesquisa), cao ngoc (Expandir a Pesquisa), lam ngoc (Expandir a Pesquisa)
can near » can never (Expandir a Pesquisa), can new (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
amp can » amp camp (Expandir a Pesquisa)
al naim » al naimi (Expandir a Pesquisa), al nuaim (Expandir a Pesquisa), al najim (Expandir a Pesquisa)
10 amp » 10 amph (Expandir a Pesquisa), 110 amp (Expandir a Pesquisa), 10 app (Expandir a Pesquisa)
a naim » a naimi (Expandir a Pesquisa), ab naim (Expandir a Pesquisa), ma naim (Expandir a Pesquisa)
nacl e » nacl en (Expandir a Pesquisa), nacl _ (Expandir a Pesquisa), nacl a (Expandir a Pesquisa)
a cam » a cat (Expandir a Pesquisa), _ cam (Expandir a Pesquisa), a ca2 (Expandir a Pesquisa)
e cam » e cama (Expandir a Pesquisa), e camp (Expandir a Pesquisa), e cami (Expandir a Pesquisa)
j 10 » j 1 (Expandir a Pesquisa), j 15 (Expandir a Pesquisa), j 20 (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 10 amp can near ) or ((( ((a naim) OR (al naim)) a cam ngoc ) or ( 3.5 nacl e cam ngoc ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j 10 amp can near ) OR ((( ((a naim) OR (al naim)) a cam ngoc ) OR ( 3.5 nacl e cam ngoc )))).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j 10 amp can near ) or ((( ((a naim) OR (al naim)) a cam ngoc ) or ( 3.5 nacl e cam ngoc ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j 10 amp can near ) or ((( ((a naim) OR (al naim)) a cam ngoc ) or ( 3.5 nacl e cam ngoc ))))*.