也許你應該嘗試一些拼寫變化:
ventral nerve » femoral nerve (擴展搜索)
benign levi » benign nevi (擴展搜索), benign lewis (擴展搜索), benign left (擴展搜索)
cent nerve » bent nerve (擴展搜索), recent nerve (擴展搜索), crest nerve (擴展搜索)
nerve cyst » nerve cystic (擴展搜索), nerve case (擴展搜索), nerve cat (擴展搜索)
a ventral » _ ventral (擴展搜索), a ventura (擴展搜索)
nerve can » nerve canal (擴展搜索), nerve case (擴展搜索), nerve a (擴展搜索)
cyst dis » cyst due (擴展搜索), cyst d (擴展搜索), cyst dna (擴展搜索)
can dags » can data (擴展搜索), can dan (擴展搜索), can da (擴展搜索)
i benign » _ benign (擴展搜索), a benign (擴展搜索), i beni (擴展搜索)
levi ct » levi c.t (擴展搜索), levi c (擴展搜索), levi cm (擴展搜索)
i cent » i cento (擴展搜索), ai cent (擴展搜索), ii cent (擴展搜索)
ct dis » ct dias (擴展搜索), ct dbs (擴展搜索), et dis (擴展搜索)

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": "(((( i cent nerve cyst dis ) OR ( a ventral nerve can dags ))) OR ( i benign levi ct dis ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i cent nerve cyst dis ) OR ( a ventral nerve can dags ))) OR ( i benign levi ct dis ))*.