Talvez deva tentar algumas variações de ortografia:
developing theory » development theory (Expandir a Pesquisa), developing story (Expandir a Pesquisa), developing sensory (Expandir a Pesquisa)
dose developing » mouse developing (Expandir a Pesquisa), those developing (Expandir a Pesquisa), de developing (Expandir a Pesquisa)
drug become » drug becomes (Expandir a Pesquisa), drugs become (Expandir a Pesquisa), drug became (Expandir a Pesquisa)
become new » becomes new (Expandir a Pesquisa)
dose level » dose levels (Expandir a Pesquisa), noise level (Expandir a Pesquisa), dose live (Expandir a Pesquisa)
level ther » level theory (Expandir a Pesquisa), level rather (Expandir a Pesquisa), levels other (Expandir a Pesquisa)
drug dose » drug dosage (Expandir a Pesquisa)
new ther » new ether (Expandir a Pesquisa), new ther1 (Expandir a Pesquisa), new theory (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 dose developing theory ) or ((( drug become new ther ) or ( drug dose level ther ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug dose developing theory ) OR ((( drug become new ther ) OR ( drug dose level ther )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( drug dose developing theory ) or ((( drug become new ther ) or ( drug dose level ther ))))*.