Talvez deva tentar algumas variações de ortografia:
complex concept » complex concepts (Expandir a Pesquisa), complex context (Expandir a Pesquisa), complex connects (Expandir a Pesquisa)
arnt complex » art complex (Expandir a Pesquisa), learnt complex (Expandir a Pesquisa), agent complex (Expandir a Pesquisa)
combat boot » combat root (Expandir a Pesquisa), combat colon (Expandir a Pesquisa), combat ebola (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
concept a » concept _ (Expandir a Pesquisa)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa)
a combat » _ combat (Expandir a Pesquisa)
boot new » boot w (Expandir a Pesquisa), hot new (Expandir a Pesquisa), boot e (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
5 arnt » _ arnt (Expandir a Pesquisa), α arnt (Expandir a Pesquisa), β arnt (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 a combat boot new ) or ((( 5 arnt complex concept a ) or ( 3.5 nacl nano carlos eslava ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j a combat boot new ) OR ((( 5 arnt complex concept a ) OR ( 3.5 nacl nano carlos eslava )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j a combat boot new ) or ((( 5 arnt complex concept a ) or ( 3.5 nacl nano carlos eslava ))))*.