Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex dina » complex dinj (Expandir a Pesquisa), complex data (Expandir a Pesquisa), complex disc (Expandir a Pesquisa)
nasal carlos » casal carlos (Expandir a Pesquisa), marsal carlos (Expandir a Pesquisa), cajal carlos (Expandir a Pesquisa)
carlos nosek » carlos nojek (Expandir a Pesquisa), carlos noseda (Expandir a Pesquisa), carlos jose (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
nacl nasal » nacl nas (Expandir a Pesquisa)
dina ngoc » dinh ngoc (Expandir a Pesquisa), minh ngoc (Expandir a Pesquisa), dang ngoc (Expandir a Pesquisa)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john n (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
a metal » a meta (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 j hobbs john new ) or ((( a metal complex dina ngoc ) or ( 3.5 nacl nasal carlos nosek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j j hobbs john new ) OR ((( a metal complex dina ngoc ) OR ( 3.5 nacl nasal carlos nosek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j j hobbs john new ) or ((( a metal complex dina ngoc ) or ( 3.5 nacl nasal carlos nosek ))))*.