Talvez deva tentar algumas variações de ortografia:
natural complex » natural complexity (Expandir a Pesquisa), natural compound (Expandir a Pesquisa)
complex tien » complex times (Expandir a Pesquisa), complex than (Expandir a Pesquisa), complex time (Expandir a Pesquisa)
carlos novo » carlos nino (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos neto (Expandir a Pesquisa)
kno carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), pino carlos (Expandir a Pesquisa)
5 natural » cd25 natural (Expandir a Pesquisa)
tien ngoc » tran ngoc (Expandir a Pesquisa), diep ngoc (Expandir a Pesquisa), tuan ngoc (Expandir a Pesquisa)
0.9 nacl » 3.5 nacl (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
combs c » combs _ (Expandir a Pesquisa)
c neto » _ neto (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 neto ) or ((( 5 natural complex tien ngoc ) or ( 0.9 nacl kno carlos novo ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs c neto ) OR ((( 5 natural complex tien ngoc ) OR ( 0.9 nacl kno carlos novo )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs c neto ) or ((( 5 natural complex tien ngoc ) or ( 0.9 nacl kno carlos novo ))))*.