Talvez deva tentar algumas variações de ortografia:
metals complexes » metal complexes (Expandir a Pesquisa), minerals complexes (Expandir a Pesquisa), metallic complexes (Expandir a Pesquisa)
complexes thi » complexes thin (Expandir a Pesquisa), complexes thion (Expandir a Pesquisa), complexes tm (Expandir a Pesquisa)
magno santos » magda santos (Expandir a Pesquisa), bruno santos (Expandir a Pesquisa)
santos nunes » santos nuno (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
34.5 null » 4.2 null (Expandir a Pesquisa), icp34.5 null (Expandir a Pesquisa)
5 metals » 5 metal (Expandir a Pesquisa), 5 meters (Expandir a Pesquisa), 5 meta (Expandir a Pesquisa)
l hobbs » j hobbs (Expandir a Pesquisa), _ hobbs (Expandir a Pesquisa), m hobbs (Expandir a Pesquisa)
ngoc » ngo (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 l hobbs john n ) or ((( 5 metals complexes thi ngoc ) or ( 34.5 null magno santos nunes ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l hobbs john n ) OR ((( 5 metals complexes thi ngoc ) OR ( 34.5 null magno santos nunes )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l hobbs john n ) or ((( 5 metals complexes thi ngoc ) or ( 34.5 null magno santos nunes ))))*.