Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
bear harvest » year harvest (Expandir a Pesquisa), deer harvest (Expandir a Pesquisa), head harvest (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
nerve cyst » nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve cut (Expandir a Pesquisa)
nerve vast » nerve vas (Expandir a Pesquisa), nerve mast (Expandir a Pesquisa), nerve taste (Expandir a Pesquisa)
vast risk » vasc risk (Expandir a Pesquisa), vaso risk (Expandir a Pesquisa), least risk (Expandir a Pesquisa)
harvest v » harvest _ (Expandir a Pesquisa), harvest f (Expandir a Pesquisa), harvest a (Expandir a Pesquisa)
a crest » _ crest (Expandir a Pesquisa), a creusot (Expandir a Pesquisa), a crespo (Expandir a Pesquisa)
j bear » j beard (Expandir a Pesquisa), j beare (Expandir a Pesquisa), j beer (Expandir a Pesquisa)
diez » diet (Expandir a Pesquisa), died (Expandir a Pesquisa), diaz (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( a crest nerve cyst due ) OR ( _ ventral nerve vast risk ))) OR ( j bear harvest v diez ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a crest nerve cyst due ) OR ( _ ventral nerve vast risk ))) OR ( j bear harvest v diez ))*.