Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
comes colin » combs colin (Expandir a Pesquisa), coles colin (Expandir a Pesquisa), tomes colin (Expandir a Pesquisa)
complex min » complex mini (Expandir a Pesquisa), complex mix (Expandir a Pesquisa), complex mic (Expandir a Pesquisa)
nina carlos » nino carlos (Expandir a Pesquisa), pina carlos (Expandir a Pesquisa), nin carlos (Expandir a Pesquisa)
nacl nina » nacl nano (Expandir a Pesquisa), nacl na (Expandir a Pesquisa)
min ngoc » minh ngoc (Expandir a Pesquisa), dinh ngoc (Expandir a Pesquisa), vinh ngoc (Expandir a Pesquisa)
l comes » l comps (Expandir a Pesquisa), l coles (Expandir a Pesquisa), l comas (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 5 methyl (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3.5 nacl (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 comes colin a ) or ((( 5 metal complex min ngoc ) or ( 3 nacl nina carlos (noe OR note) ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comes colin a ) OR ((( 5 metal complex min ngoc ) OR ( 3 nacl nina carlos (noe OR note) )))).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l comes colin a ) or ((( 5 metal complex min ngoc ) or ( 3 nacl nina carlos (noe OR note) ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comes colin a ) or ((( 5 metal complex min ngoc ) or ( 3 nacl nina carlos (noe OR note) ))))*.