Talvez deva tentar algumas variações de ortografia:
elderly compared » elderly comparison (Expandir a Pesquisa), elderly care (Expandir a Pesquisa)
enables coupled » enables complex (Expandir a Pesquisa), ensembles coupled (Expandir a Pesquisa), enables complete (Expandir a Pesquisa)
compared law » compared a (Expandir a Pesquisa), compared _ (Expandir a Pesquisa), company law (Expandir a Pesquisa)
coupled cell » coupled cells (Expandir a Pesquisa), couples cell (Expandir a Pesquisa)
a enables » _ enables (Expandir a Pesquisa), 2 enables (Expandir a Pesquisa), 1 enables (Expandir a Pesquisa)
cpre can » care can (Expandir a Pesquisa), core can (Expandir a Pesquisa), cre can (Expandir a Pesquisa)
law ngoc » lam ngoc (Expandir a Pesquisa), la ngoc (Expandir a Pesquisa), lai ngoc (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (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: (( _ la cpre can now ) or ((( _ elderly compared law ngoc ) or ( a enables coupled cell non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ la cpre can now ) OR ((( _ elderly compared law ngoc ) OR ( a enables coupled cell non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ la cpre can now ) or ((( _ elderly compared law ngoc ) or ( a enables coupled cell non ))))*.