Talvez deva tentar algumas variações de ortografia:
companies case » companies based (Expandir a Pesquisa), companies a (Expandir a Pesquisa), companies act (Expandir a Pesquisa)
nacl companies » small companies (Expandir a Pesquisa), oil companies (Expandir a Pesquisa), nacl compared (Expandir a Pesquisa)
malaria care » malaria case (Expandir a Pesquisa), malaria cases (Expandir a Pesquisa), malaria caused (Expandir a Pesquisa)
complex care » complex case (Expandir a Pesquisa)
nsl complex » msl complex (Expandir a Pesquisa), l complex (Expandir a Pesquisa), basal complex (Expandir a Pesquisa)
1 malaria » _ malaria (Expandir a Pesquisa), a malaria (Expandir a Pesquisa), 1 malaysia (Expandir a Pesquisa)
case note » case notes (Expandir a Pesquisa)
care now » care new (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
3 nsl » 3 ns3 (Expandir a Pesquisa), _ nsl (Expandir a Pesquisa), 3 ngl (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: (( 1 malaria care _ newts ) OR ((( 3 nacl companies case note ) OR ( 3 nsl complex care now ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( 1 malaria care _ newts ) OR ((( 3 nacl companies case note ) OR ( 3 nsl complex care now ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( 1 malaria care _ newts ) OR ((( 3 nacl companies case note ) OR ( 3 nsl complex care now ))))*.