Talvez deva tentar algumas variações de ortografia:
comparing years » comparing pars (Expandir a Pesquisa), comparing fear (Expandir a Pesquisa), comparing near (Expandir a Pesquisa)
covert disease » overt disease (Expandir a Pesquisa), cover disease (Expandir a Pesquisa), poverty disease (Expandir a Pesquisa)
nacl comparing » al comparing (Expandir a Pesquisa), all comparing (Expandir a Pesquisa), rachel comparing (Expandir a Pesquisa)
disease newly » disease new (Expandir a Pesquisa), disease newer (Expandir a Pesquisa), disease news (Expandir a Pesquisa)
complex tail » complex trait (Expandir a Pesquisa), complex task (Expandir a Pesquisa), complex thin (Expandir a Pesquisa)
ntr complex » mtor complex (Expandir a Pesquisa), par complex (Expandir a Pesquisa), cmr complex (Expandir a Pesquisa)
l covert » _ covert (Expandir a Pesquisa), a covert (Expandir a Pesquisa), l cover (Expandir a Pesquisa)
tail co » tail ca (Expandir a Pesquisa), tail cd (Expandir a Pesquisa), tail do (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), m nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
5 ntr » _ ntr (Expandir a Pesquisa), 5 nor (Expandir a Pesquisa)
how » show (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 covert disease newly ) or ((( 5 ntr complex tail co ) or ( 3 nacl comparing years how ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l covert disease newly ) OR ((( 5 ntr complex tail co ) OR ( 3 nacl comparing years how )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l covert disease newly ) or ((( 5 ntr complex tail co ) or ( 3 nacl comparing years how ))))*.