Talvez deva tentar algumas variações de ortografia:
complex concepts » complex confers (Expandir a Pesquisa), complex controls (Expandir a Pesquisa), complex concentrates (Expandir a Pesquisa)
combat colon » combat covid (Expandir a Pesquisa), combat boot (Expandir a Pesquisa)
arnt complex » art complex (Expandir a Pesquisa), learnt complex (Expandir a Pesquisa), agent complex (Expandir a Pesquisa)
nino carlos » cano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), semino carlos (Expandir a Pesquisa)
carlos nava » carlos navarro (Expandir a Pesquisa), carlos eslava (Expandir a Pesquisa), carlos zavala (Expandir a Pesquisa)
concepts a » concepts _ (Expandir a Pesquisa)
nacl nino » nacl nano (Expandir a Pesquisa), nacl kno (Expandir a Pesquisa), nacl mno (Expandir a Pesquisa)
a combat » _ combat (Expandir a Pesquisa)
colon e » colon en (Expandir a Pesquisa), colon _ (Expandir a Pesquisa), colon a (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 colon e ) or ((( 5 arnt complex concepts a ) or ( 0.9 nacl nino carlos nava ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j a combat colon e ) OR ((( 5 arnt complex concepts a ) OR ( 0.9 nacl nino carlos nava )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j a combat colon e ) or ((( 5 arnt complex concepts a ) or ( 0.9 nacl nino carlos nava ))))*.