Talvez deva tentar algumas variações de ortografia:
complex connects » complex concepts (Expandir a Pesquisa), complex connection (Expandir a Pesquisa), complex connective (Expandir a Pesquisa)
combat root » combat robot (Expandir a Pesquisa), combat boot (Expandir a Pesquisa), combat road (Expandir a Pesquisa)
hat complex » heart complex (Expandir a Pesquisa), hat complexes (Expandir a Pesquisa), fact complex (Expandir a Pesquisa)
cano carlos » luciano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), solano carlos (Expandir a Pesquisa)
connects a » connects _ (Expandir a Pesquisa), connects dna (Expandir a Pesquisa)
nacl cano » nacl nano (Expandir a Pesquisa), nacl caso4 (Expandir a Pesquisa), nacl cacl (Expandir a Pesquisa)
root new » roots new (Expandir a Pesquisa), root's new (Expandir a Pesquisa), root neck (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
_ hat » _ has (Expandir a Pesquisa), _ han (Expandir a Pesquisa), _ hay (Expandir a Pesquisa)
negrao » negras (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 _ combat root new ) or ((( _ hat complex connects a ) or ( 7.5 nacl cano carlos negrao ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combat root new ) OR ((( _ hat complex connects a ) OR ( 7.5 nacl cano carlos negrao )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combat root new ) or ((( _ hat complex connects a ) or ( 7.5 nacl cano carlos negrao ))))*.