Talvez deva tentar algumas variações de ortografia:
complex connections » complex connection (Expandir a Pesquisa), complex collections (Expandir a Pesquisa), complex infections (Expandir a Pesquisa)
connections a » connections _ (Expandir a Pesquisa), connections among (Expandir a Pesquisa), connections from (Expandir a Pesquisa)
hart complex » heart complex (Expandir a Pesquisa), hat complex (Expandir a Pesquisa), art complex (Expandir a Pesquisa)
knopf carlos » prof carlos (Expandir a Pesquisa)
nacl knopf » nacl kno (Expandir a Pesquisa)
carlos nar » carlos nara (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa), carlos nardi (Expandir a Pesquisa)
l combat » le combat (Expandir a Pesquisa), _ combat (Expandir a Pesquisa), a combat (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
hiv new » hiv nef (Expandir a Pesquisa), iv new (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 hiv new ) or ((( e hart complex connections a ) or ( 7.5 nacl knopf carlos nar ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combat hiv new ) OR ((( e hart complex connections a ) OR ( 7.5 nacl knopf carlos nar )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combat hiv new ) or ((( e hart complex connections a ) or ( 7.5 nacl knopf carlos nar ))))*.