Talvez deva tentar algumas variações de ortografia:
metil complexes » metal complexes (Expandir a Pesquisa), metals complexes (Expandir a Pesquisa), axetil complexes (Expandir a Pesquisa)
complexes tran » complexes track (Expandir a Pesquisa), complexes thin (Expandir a Pesquisa), complexes total (Expandir a Pesquisa)
najar carlos » nejar carlos (Expandir a Pesquisa), nassar carlos (Expandir a Pesquisa), naja carlo (Expandir a Pesquisa)
carlos nardi » carlos menardi (Expandir a Pesquisa), carlos jardim (Expandir a Pesquisa), carlos neri (Expandir a Pesquisa)
nacl najar » al najar (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa)
l toombs » ms toombs (Expandir a Pesquisa), _ coombs (Expandir a Pesquisa), g coombs (Expandir a Pesquisa)
jason c » jason _ (Expandir a Pesquisa), jason a (Expandir a Pesquisa)
5 metil » 5 methyl (Expandir a Pesquisa)
ngoc » ngo (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 toombs jason c ) or ((( 5 metil complexes tran ngoc ) or ( 3.5 nacl najar carlos nardi ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l toombs jason c ) OR ((( 5 metil complexes tran ngoc ) OR ( 3.5 nacl najar carlos nardi )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l toombs jason c ) or ((( 5 metil complexes tran ngoc ) or ( 3.5 nacl najar carlos nardi ))))*.