Talvez deva tentar algumas variações de ortografia:
research synthesis » starch synthesis (Expandir a Pesquisa)
meng research » among research (Expandir a Pesquisa), being research (Expandir a Pesquisa), lung research (Expandir a Pesquisa)
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
renal nerve » retinal nerve (Expandir a Pesquisa), cranial nerve (Expandir a Pesquisa), spinal nerve (Expandir a Pesquisa)
nerve cnat » nerve cat (Expandir a Pesquisa), nerve canal (Expandir a Pesquisa), nerve can (Expandir a Pesquisa)
cnat diet » cat diet (Expandir a Pesquisa), fat diet (Expandir a Pesquisa), meat diet (Expandir a Pesquisa)
3 center » _ center (Expandir a Pesquisa), a center (Expandir a Pesquisa), 2 center (Expandir a Pesquisa)
nerve cn » nerve can (Expandir a Pesquisa), nerve c (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
i renal » i real (Expandir a Pesquisa)
cn dias » con dias (Expandir a Pesquisa), ckn dias (Expandir a Pesquisa), en dias (Expandir a Pesquisa)
j meng » j mena (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: (((( 3 center nerve cnat diet ) OR ( i renal nerve cn dias ))) OR ( j meng research synthesis _ ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 center nerve cnat diet ) or ( i renal nerve cn dias ))) or ( j meng research synthesis _ ))*.