Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex tris » complex tric (Expandir a Pesquisa), complex trs (Expandir a Pesquisa), complex traits (Expandir a Pesquisa)
nabr carlos » najar carlos (Expandir a Pesquisa), nader carlos (Expandir a Pesquisa), jair carlos (Expandir a Pesquisa)
carlos juca » carlos juan (Expandir a Pesquisa), carlos julio (Expandir a Pesquisa)
combs icus » combs locus (Expandir a Pesquisa)
tris ngoc » trinh ngoc (Expandir a Pesquisa), trieu ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
nacl nabr » nacl kbr (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa)
icus new » virus new (Expandir a Pesquisa), locus new (Expandir a Pesquisa), focus new (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
e combs » sex combs (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 combs icus new ) or ((( 5 metal complex tris ngoc ) or ( 3.5 nacl nabr carlos juca ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e combs icus new ) OR ((( 5 metal complex tris ngoc ) OR ( 3.5 nacl nabr carlos juca )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e combs icus new ) or ((( 5 metal complex tris ngoc ) or ( 3.5 nacl nabr carlos juca ))))*.