Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex trans » complex traits (Expandir a Pesquisa), complex trait (Expandir a Pesquisa), complex than (Expandir a Pesquisa)
nabr carlos » najar carlos (Expandir a Pesquisa), nader carlos (Expandir a Pesquisa), mar carlos (Expandir a Pesquisa)
carlos noel » carlos joel (Expandir a Pesquisa), carlos noe (Expandir a Pesquisa), carlos yoel (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
trans ngoc » tran ngoc (Expandir a Pesquisa), trang ngoc (Expandir a Pesquisa), thanh ngoc (Expandir a Pesquisa)
nacl nabr » nacl kbr (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 7.2 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
e hobbs » e hobbes (Expandir a Pesquisa), j hobbs (Expandir a Pesquisa), _ hobbs (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 5 methyl (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 e hobbs john n ) or ((( 5 metal complex trans ngoc ) or ( 7.5 nacl nabr carlos noel ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e hobbs john n ) OR ((( 5 metal complex trans ngoc ) OR ( 7.5 nacl nabr carlos noel )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e hobbs john n ) or ((( 5 metal complex trans ngoc ) or ( 7.5 nacl nabr carlos noel ))))*.