Talvez deva tentar algumas variações de ortografia:
cobalt complex » cobalt complexes (Expandir a Pesquisa)
cooper jason » cooper john (Expandir a Pesquisa), cooper alan (Expandir a Pesquisa), cooper james (Expandir a Pesquisa)
complex than » complex trait (Expandir a Pesquisa)
carlos nojek » carlos nunez (Expandir a Pesquisa), carlos nunes (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa)
gil carlos » gil campos (Expandir a Pesquisa)
i cooper » _ cooper (Expandir a Pesquisa)
a cobalt » _ cobalt (Expandir a Pesquisa)
nacl gil » nacl kcl (Expandir a Pesquisa), nacl gum (Expandir a Pesquisa), nacl i (Expandir a Pesquisa)
jason c » jason _ (Expandir a Pesquisa), jason a (Expandir a Pesquisa)
than o » ethan o (Expandir a Pesquisa), than oo (Expandir a Pesquisa), than o1 (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 i cooper jason c ) or ((( a cobalt complex than o ) or ( 0.9 nacl gil carlos nojek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j i cooper jason c ) OR ((( a cobalt complex than o ) OR ( 0.9 nacl gil carlos nojek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j i cooper jason c ) or ((( a cobalt complex than o ) or ( 0.9 nacl gil carlos nojek ))))*.