Talvez deva tentar algumas variações de ortografia:
back developing » talk developing (Expandir a Pesquisa), book developing (Expandir a Pesquisa), neck developing (Expandir a Pesquisa)
developing them » developing other (Expandir a Pesquisa), developing three (Expandir a Pesquisa), developing tree (Expandir a Pesquisa)
doses level » does level (Expandir a Pesquisa), dose levels (Expandir a Pesquisa), bones level (Expandir a Pesquisa)
drug doses » drug disease (Expandir a Pesquisa)
level ther » level theory (Expandir a Pesquisa), level rather (Expandir a Pesquisa), levels other (Expandir a Pesquisa)
dose level » dose levels (Expandir a Pesquisa), noise level (Expandir a Pesquisa), dose live (Expandir a Pesquisa)
drug back » drug bank (Expandir a Pesquisa), drug lack (Expandir a Pesquisa), drug block (Expandir a Pesquisa)
drug dose » drug dosage (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: (( drug back developing them ) or ((( drug doses level ther ) or ( drug dose level ther ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug back developing them ) OR ((( drug doses level ther ) OR ( drug dose level ther ))))*.