Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex tail » complex trait (Expandir a Pesquisa), complex task (Expandir a Pesquisa), complex thin (Expandir a Pesquisa)
carlos nosed » carlos noseda (Expandir a Pesquisa), carlos noceda (Expandir a Pesquisa), carlos jose (Expandir a Pesquisa)
combs anion » combs brandon (Expandir a Pesquisa), combs allison (Expandir a Pesquisa), combs daniel (Expandir a Pesquisa)
knox carlos » knopf carlos (Expandir a Pesquisa), knox charles (Expandir a Pesquisa), knox carl (Expandir a Pesquisa)
tail ngoc » tai ngoc (Expandir a Pesquisa), tail non (Expandir a Pesquisa)
nacl knox » nacl kno (Expandir a Pesquisa), nacl mno (Expandir a Pesquisa)
anion na » anions na (Expandir a Pesquisa), anion a (Expandir a Pesquisa), anion gap (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (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 _ combs anion na ) or ((( 5 metal complex tail ngoc ) or ( 3.5 nacl knox carlos nosed ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs anion na ) OR ((( 5 metal complex tail ngoc ) OR ( 3.5 nacl knox carlos nosed )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs anion na ) or ((( 5 metal complex tail ngoc ) or ( 3.5 nacl knox carlos nosed ))))*.