Talvez deva tentar algumas variações de ortografia:
complex tears » complex traits (Expandir a Pesquisa), complex trait (Expandir a Pesquisa), complex than (Expandir a Pesquisa)
carlos nejar » carlos negrao (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa)
does colony » does colon (Expandir a Pesquisa), does colonic (Expandir a Pesquisa), does colour (Expandir a Pesquisa)
colony new » colonial new (Expandir a Pesquisa)
ht complex » hat complex (Expandir a Pesquisa), dht complex (Expandir a Pesquisa), mt complex (Expandir a Pesquisa)
kno carlos » knopf carlos (Expandir a Pesquisa), cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
tears n » tears _ (Expandir a Pesquisa), tears a (Expandir a Pesquisa), tears 1 (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 e does colony new ) OR ((( 5 ht complex tears n ) OR ( 3.5 nacl kno carlos nejar ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e does colony new ) OR ((( 5 ht complex tears n ) OR ( 3.5 nacl kno carlos nejar ))))*.