Talvez deva tentar algumas variações de ortografia:
cooper jason » cooper john (Expandir a Pesquisa), cooper alan (Expandir a Pesquisa), cooper james (Expandir a Pesquisa)
complex task » complex trait (Expandir a Pesquisa), complex than (Expandir a Pesquisa)
meo complex » mo complex (Expandir a Pesquisa), metro complex (Expandir a Pesquisa), feio complex (Expandir a Pesquisa)
jair carlos » mir carlos (Expandir a Pesquisa)
task ngoc » task non (Expandir a Pesquisa)
nacl jair » nacl nabr (Expandir a Pesquisa)
g cooper » _ cooper (Expandir a Pesquisa), a cooper (Expandir a Pesquisa), l cooper (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
jason n » jason _ (Expandir a Pesquisa), jason a (Expandir a Pesquisa), jason c (Expandir a Pesquisa)
nunez » nunes (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 g cooper jason n ) or ((( 5 meo complex task ngoc ) or ( 3.5 nacl jair carlos nunez ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j g cooper jason n ) OR ((( 5 meo complex task ngoc ) OR ( 3.5 nacl jair carlos nunez )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j g cooper jason n ) or ((( 5 meo complex task ngoc ) or ( 3.5 nacl jair carlos nunez ))))*.