Talvez deva tentar algumas variações de ortografia:
model compound » model compounds (Expandir a Pesquisa), novel compound (Expandir a Pesquisa)
hearn compared » heart compared (Expandir a Pesquisa), heparin compared (Expandir a Pesquisa), hearing compared (Expandir a Pesquisa)
compared law » compared a (Expandir a Pesquisa), compared can (Expandir a Pesquisa), compared _ (Expandir a Pesquisa)
a nectar » _ nectar (Expandir a Pesquisa), de nectar (Expandir a Pesquisa), un nectar (Expandir a Pesquisa)
nad camp » nad cap (Expandir a Pesquisa), nad adp (Expandir a Pesquisa), nad caps (Expandir a Pesquisa)
ca newts » can newts (Expandir a Pesquisa), _ newts (Expandir a Pesquisa), a newt (Expandir a Pesquisa)
j hearn » j hearne (Expandir a Pesquisa), j heard (Expandir a Pesquisa), j heart (Expandir a Pesquisa)
law new » jaw new (Expandir a Pesquisa)
camp ca » camp a (Expandir a Pesquisa), camp c (Expandir a Pesquisa), camp camp (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ model compound a nectar ) OR ( j hearn compared law new ))) OR ( _ nad camp ca newts ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ model compound a nectar ) or ( j hearn compared law new ))) or ( _ nad camp ca newts ))*.