Talvez deva tentar algumas variações de ortografia:
complex connection » complex correction (Expandir a Pesquisa), complex infection (Expandir a Pesquisa), complex condition (Expandir a Pesquisa)
hart complex » heart complex (Expandir a Pesquisa), hat complex (Expandir a Pesquisa), art complex (Expandir a Pesquisa)
carlos nejar » carlos negrao (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa)
nano carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), nuno carlos (Expandir a Pesquisa)
l combat » le combat (Expandir a Pesquisa), _ combat (Expandir a Pesquisa), a combat (Expandir a Pesquisa)
nac nano » nacl nano (Expandir a Pesquisa), ac nano (Expandir a Pesquisa), c nano (Expandir a Pesquisa)
covid a » covid _ (Expandir a Pesquisa), covid era (Expandir a Pesquisa), covid 19 (Expandir a Pesquisa)
3.5 nac » 3.5 nacl (Expandir a Pesquisa), 7.5 nacl (Expandir a Pesquisa)
a hart » a hard (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 l combat covid a ) or ((( a hart complex connection _ ) or ( 3.5 nac nano carlos nejar ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combat covid a ) OR ((( a hart complex connection _ ) OR ( 3.5 nac nano carlos nejar )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combat covid a ) or ((( a hart complex connection _ ) or ( 3.5 nac nano carlos nejar ))))*.