Talvez deva tentar algumas variações de ortografia:
metil complex » metal complex (Expandir a Pesquisa), medial complex (Expandir a Pesquisa), metals complex (Expandir a Pesquisa)
complex task » complex trait (Expandir a Pesquisa), complex than (Expandir a Pesquisa)
carlos kosek » carlos kose (Expandir a Pesquisa), carlos kosera (Expandir a Pesquisa), carlos jose (Expandir a Pesquisa)
jain carlos » jair carlos (Expandir a Pesquisa), lain carlos (Expandir a Pesquisa), jaime carlos (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa), hobbs john (Expandir a Pesquisa)
nacl jain » nacl thin (Expandir a Pesquisa)
john net » john new (Expandir a Pesquisa), john neetu (Expandir a Pesquisa), john asnet (Expandir a Pesquisa)
task can » tasks can (Expandir a Pesquisa), task cnn (Expandir a Pesquisa), task a (Expandir a Pesquisa)
5 metil » 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 john net ) or ((( 5 metil complex task can ) or ( 0.9 nacl jain carlos kosek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs john net ) OR ((( 5 metil complex task can ) OR ( 0.9 nacl jain carlos kosek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs john net ) or ((( 5 metil complex task can ) or ( 0.9 nacl jain carlos kosek ))))*.