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 nunes » carlos nunez (Expandir a Pesquisa), santos nunes (Expandir a Pesquisa)
combs coli » combs colin (Expandir a Pesquisa), combe colin (Expandir a Pesquisa)
kcl carlos » kuhl carlos (Expandir a Pesquisa), gil carlos (Expandir a Pesquisa), l carlos (Expandir a Pesquisa)
coli need » coli new (Expandir a Pesquisa), coli nad (Expandir a Pesquisa), coli nrd (Expandir a Pesquisa)
tail bond » tail binds (Expandir a Pesquisa), tail bones (Expandir a Pesquisa), tail bud (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 5 methyl (Expandir a Pesquisa)
nacl » natl (Expandir a Pesquisa), nac (Expandir a Pesquisa), nucl (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 combs coli need ) or ((( 5 metal complex tail bond ) or ( 0.9 nacl kcl carlos nunes ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs coli need ) OR ((( 5 metal complex tail bond ) OR ( 0.9 nacl kcl carlos nunes )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs coli need ) or ((( 5 metal complex tail bond ) or ( 0.9 nacl kcl carlos nunes ))))*.