Talvez deva tentar algumas variações de ortografia:
coomber jason » coombes jason (Expandir a Pesquisa), cooper jason (Expandir a Pesquisa), cromer jason (Expandir a Pesquisa)
metal complex » metal complexes (Expandir a Pesquisa)
carlos kosek » carlos kose (Expandir a Pesquisa), carlos kosera (Expandir a Pesquisa), carlos jose (Expandir a Pesquisa)
complex tri » complex tric (Expandir a Pesquisa), complex tris (Expandir a Pesquisa), complex trs (Expandir a Pesquisa)
l coomber » l cooper (Expandir a Pesquisa), k coombes (Expandir a Pesquisa)
tri ngoc » thi ngoc (Expandir a Pesquisa), tri ngo (Expandir a Pesquisa), tai ngoc (Expandir a Pesquisa)
jason a » jason _ (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)
nejar » dejar (Expandir a Pesquisa), nejad (Expandir a Pesquisa), nejat (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 coomber jason a ) or ((( 5 metal complex tri ngoc ) or ( 0.9 nacl nejar carlos kosek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l coomber jason a ) OR ((( 5 metal complex tri ngoc ) OR ( 0.9 nacl nejar carlos kosek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l coomber jason a ) or ((( 5 metal complex tri ngoc ) or ( 0.9 nacl nejar carlos kosek ))))*.