Talvez deva tentar algumas variações de ortografia:
complex than » complex trait (Expandir a Pesquisa)
cano carlos » luciano carlos (Expandir a Pesquisa), casiano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa)
carlos mata » carlos maria (Expandir a Pesquisa), carlos makoto (Expandir a Pesquisa), carlos mario (Expandir a Pesquisa)
yl complex » gl complex (Expandir a Pesquisa), cl complex (Expandir a Pesquisa), fl complex (Expandir a Pesquisa)
down note » down novel (Expandir a Pesquisa), down net (Expandir a Pesquisa), down nor (Expandir a Pesquisa)
than ngoc » thanh ngoc (Expandir a Pesquisa), thuan ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
nacl cano » nacl nano (Expandir a Pesquisa), nacl caso4 (Expandir a Pesquisa), nacl co (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
5 yl » 2 yl (Expandir a Pesquisa), 1 yl (Expandir a Pesquisa), 4 yl (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j _ goes down note ) OR ((( 5 yl complex than ngoc ) OR ( 3.5 nacl cano carlos mata ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ goes down note ) OR ((( 5 yl complex than ngoc ) OR ( 3.5 nacl cano carlos mata ))))*.