Talvez deva tentar algumas variações de ortografia:
complex trait » complex traits (Expandir a Pesquisa)
carlos nodal » carlos vidal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa), hobbs john (Expandir a Pesquisa)
trait ngoc » tran ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa), trang ngoc (Expandir a Pesquisa)
co carlos » fico carlos (Expandir a Pesquisa), cardo carlos (Expandir a Pesquisa), marco carlos (Expandir a Pesquisa)
john net » john new (Expandir a Pesquisa), john neetu (Expandir a Pesquisa), john asnet (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
nacl co » nacl co2 (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa), nacl kno (Expandir a Pesquisa)
4 cell » 4 cells (Expandir a Pesquisa), cd4 cell (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 l combs john net ) OR ((( 4 cell complex trait ngoc ) OR ( 3.5 nacl co carlos nodal ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs john net ) OR ((( 4 cell complex trait ngoc ) OR ( 3.5 nacl co carlos nodal ))))*.