Talvez deva tentar algumas variações de ortografia:
center nurses » cancer nurses (Expandir a Pesquisa), mental nurses (Expandir a Pesquisa), fever nurses (Expandir a Pesquisa)
mental nerve » ventral nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa), renal nerve (Expandir a Pesquisa)
case does » cases does (Expandir a Pesquisa), cause does (Expandir a Pesquisa), phase does (Expandir a Pesquisa)
base does » base dos (Expandir a Pesquisa), base des (Expandir a Pesquisa), phase does (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve cut (Expandir a Pesquisa), nerve case (Expandir a Pesquisa)
cat diets » fat diets (Expandir a Pesquisa), salt diets (Expandir a Pesquisa), cattle diets (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), j centeno (Expandir a Pesquisa), j cestero (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mena (Expandir a Pesquisa), j mehta (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 center nurses ((case does) OR (base does)) ) or ( j mental nerve cat diets ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j center nurses ((case does) OR (base does)) ) OR ( j mental nerve cat diets )).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j center nurses ((case does) OR (base does)) ) or ( j mental nerve cat diets ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j center nurses ((case does) OR (base does)) ) or ( j mental nerve cat diets ))*.