Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
coombes john » coombs john (Expandir a Pesquisa), combes john (Expandir a Pesquisa), coombes jason (Expandir a Pesquisa)
cst complex » coat complex (Expandir a Pesquisa), ift complex (Expandir a Pesquisa), corest complex (Expandir a Pesquisa)
concept nlo » concept new (Expandir a Pesquisa), concept non (Expandir a Pesquisa), concept atom (Expandir a Pesquisa)
nabr carlos » jair carlos (Expandir a Pesquisa), mar carlos (Expandir a Pesquisa), aybar carlos (Expandir a Pesquisa)
e coombes » k coombes (Expandir a Pesquisa), m coombes (Expandir a Pesquisa), _ coombes (Expandir a Pesquisa)
nacl nabr » nacl kbr (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa), nacl naoh (Expandir a Pesquisa)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john n (Expandir a Pesquisa)
0.9 nacl » 3.5 nacl (Expandir a Pesquisa)
5 cst » _ cst (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 e coombes john new ) or ((( 5 cst complex concept nlo ) or ( 0.9 nacl nabr carlos lima ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e coombes john new ) OR ((( 5 cst complex concept nlo ) OR ( 0.9 nacl nabr carlos lima )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e coombes john new ) or ((( 5 cst complex concept nlo ) or ( 0.9 nacl nabr carlos lima ))))*.