Talvez deva tentar algumas variações de ortografia:
levels another » reveals another (Expandir a Pesquisa), levels after (Expandir a Pesquisa), levels alter (Expandir a Pesquisa)
dose develop » bse develop (Expandir a Pesquisa), mouse develops (Expandir a Pesquisa), sense develop (Expandir a Pesquisa)
develop them » develop type (Expandir a Pesquisa), develop age (Expandir a Pesquisa)
noise levels » noise level (Expandir a Pesquisa)
doses plant » does plant (Expandir a Pesquisa), dose plant (Expandir a Pesquisa), dose plan (Expandir a Pesquisa)
plant third » last third (Expandir a Pesquisa), plant thorn (Expandir a Pesquisa), plant bird (Expandir a Pesquisa)
drug doses » drug disease (Expandir a Pesquisa)
drug noise » drug naive (Expandir a Pesquisa), drug nurse (Expandir a Pesquisa), during noise (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 dose develop them ) or ((( drug doses plant third ) or ( drug noise levels another ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug dose develop them ) OR ((( drug doses plant third ) OR ( drug noise levels another )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( drug dose develop them ) or ((( drug doses plant third ) or ( drug noise levels another ))))*.