Talvez deva tentar algumas variações de ortografia:
coombs jason » coombes jason (Expandir a Pesquisa), toombs jason (Expandir a Pesquisa), cooper jason (Expandir a Pesquisa)
sets complex » set1 complex (Expandir a Pesquisa), set complex (Expandir a Pesquisa), set3 complex (Expandir a Pesquisa)
complex tran » complex trans (Expandir a Pesquisa), complex than (Expandir a Pesquisa), complex trait (Expandir a Pesquisa)
nader carlos » hader carlos (Expandir a Pesquisa), nader charles (Expandir a Pesquisa), eder carlos (Expandir a Pesquisa)
carlos nejat » carlos nejar (Expandir a Pesquisa), carlos vejar (Expandir a Pesquisa), carlos bejar (Expandir a Pesquisa)
nacl nader » nacl nabr (Expandir a Pesquisa), nacl under (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
jason a » jason _ (Expandir a Pesquisa)
5 sets » e sets (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 _ coombs jason a ) or ((( 5 sets complex tran ngoc ) or ( 7.5 nacl nader carlos nejat ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ coombs jason a ) OR ((( 5 sets complex tran ngoc ) OR ( 7.5 nacl nader carlos nejat )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ coombs jason a ) or ((( 5 sets complex tran ngoc ) or ( 7.5 nacl nader carlos nejat ))))*.