Talvez deva tentar algumas variações de ortografia:
complex concepts » complex confers (Expandir a Pesquisa), complex controls (Expandir a Pesquisa), complex concentrates (Expandir a Pesquisa)
concepts new » concepts et (Expandir a Pesquisa), concepts de (Expandir a Pesquisa), concepts _ (Expandir a Pesquisa)
carlos marin » carlos martin (Expandir a Pesquisa), carlos mario (Expandir a Pesquisa), carlos maria (Expandir a Pesquisa)
meo complex » mo complex (Expandir a Pesquisa), metro complex (Expandir a Pesquisa), feio complex (Expandir a Pesquisa)
nina carlos » nino carlos (Expandir a Pesquisa), pina carlos (Expandir a Pesquisa), nin carlos (Expandir a Pesquisa)
nacl nina » nacl nano (Expandir a Pesquisa), nacl na (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
combs c » combs _ (Expandir a Pesquisa)
c new » a new (Expandir a Pesquisa), _ new (Expandir a Pesquisa), c neu (Expandir a Pesquisa)
_ meo » _ men (Expandir a Pesquisa), _ mek (Expandir a Pesquisa), _ met (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 _ combs c new ) or ((( _ meo complex concepts new ) or ( 3.5 nacl nina carlos marin ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs c new ) OR ((( _ meo complex concepts new ) OR ( 3.5 nacl nina carlos marin )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs c new ) or ((( _ meo complex concepts new ) or ( 3.5 nacl nina carlos marin ))))*.