Talvez deva tentar algumas variações de ortografia:
cohort compared » cohort comparison (Expandir a Pesquisa), cohort component (Expandir a Pesquisa), support compared (Expandir a Pesquisa)
cast compared » cost compared (Expandir a Pesquisa), cases compared (Expandir a Pesquisa), test compared (Expandir a Pesquisa)
compared law » compared a (Expandir a Pesquisa), compared _ (Expandir a Pesquisa), company law (Expandir a Pesquisa)
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), icat computer (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
law ngoc » lam ngoc (Expandir a Pesquisa), la ngoc (Expandir a Pesquisa), lai ngoc (Expandir a Pesquisa)
c cohort » 2 cohort (Expandir a Pesquisa), 1 cohort (Expandir a Pesquisa), 14 cohort (Expandir a Pesquisa)
c cast » c case (Expandir a Pesquisa), c caat (Expandir a Pesquisa), c casa (Expandir a Pesquisa)
a neta » a neto (Expandir a Pesquisa), a nectar (Expandir a Pesquisa)
_ nat » _ net (Expandir a Pesquisa), _ nad (Expandir a Pesquisa), _ nab (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: (((( c cast compared law ngoc ) or ( c cohort compared law ngoc ))) or ( _ nat computer a neta ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( c cast compared law ngoc ) OR ( c cohort compared law ngoc ))) OR ( _ nat computer a neta )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( c cast compared law ngoc ) or ( c cohort compared law ngoc ))) or ( _ nat computer a neta ))*.