Talvez deva tentar algumas variações de ortografia:
malaria comparing » malaria comparisons (Expandir a Pesquisa), malaria comparison (Expandir a Pesquisa), malaria compared (Expandir a Pesquisa)
comparing care » comparing case (Expandir a Pesquisa), comparing cancer (Expandir a Pesquisa), comparing change (Expandir a Pesquisa)
nacl complex » nail complex (Expandir a Pesquisa), nac56 complex (Expandir a Pesquisa), nasal complex (Expandir a Pesquisa)
care newts » care news (Expandir a Pesquisa), care needs (Expandir a Pesquisa), care new (Expandir a Pesquisa)
nacl compr » nacl compared (Expandir a Pesquisa)
a malaria » _ malaria (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
3 nacl » m nacl (Expandir a Pesquisa), 3.5 nacl (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: (( a malaria comparing care newts ) or ((( 3 nacl compr can now ) or ( _ nacl complex case now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a malaria comparing care newts ) OR ((( 3 nacl compr can now ) OR ( _ nacl complex case now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a malaria comparing care newts ) or ((( 3 nacl compr can now ) or ( _ nacl complex case now ))))*.