Talvez deva tentar algumas variações de ortografia:
complex condition » complex conditions (Expandir a Pesquisa), complex composition (Expandir a Pesquisa), complex consisting (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)
nacl nano » nacl kno (Expandir a Pesquisa), nacl nabr (Expandir a Pesquisa)
l combat » le combat (Expandir a Pesquisa), _ combat (Expandir a Pesquisa), a combat (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
covid a » covid _ (Expandir a Pesquisa), covid era (Expandir a Pesquisa), covid 19 (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 condition _ ) or ( 3.5 nacl nano carlos nejar ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combat covid a ) OR ((( a hart complex condition _ ) OR ( 3.5 nacl nano carlos nejar )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combat covid a ) or ((( a hart complex condition _ ) or ( 3.5 nacl nano carlos nejar ))))*.