Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
combs colgin » combs colin (Expandir a Pesquisa)
complex tail » complex task (Expandir a Pesquisa), complex thin (Expandir a Pesquisa), complex tap (Expandir a Pesquisa)
carlos rojek » carlos nojek (Expandir a Pesquisa), carlos rojas (Expandir a Pesquisa), carlos roger (Expandir a Pesquisa)
colgin neil » collin neil (Expandir a Pesquisa), colin neil (Expandir a Pesquisa), collins neil (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
tail ngoc » tai ngoc (Expandir a Pesquisa), tail non (Expandir a Pesquisa)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa), nacl naoh (Expandir a Pesquisa)
5 metal » 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 colgin neil ) OR ((( 5 metal complex tail ngoc ) OR ( 3.5 nacl nano carlos rojek ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j _ combs colgin neil ) OR ((( 5 metal complex tail ngoc ) OR ( 3.5 nacl nano carlos rojek ))))*".