Talvez deva tentar algumas variações de ortografia:
doses derived » losses derived (Expandir a Pesquisa), bases derived (Expandir a Pesquisa), cases derived (Expandir a Pesquisa)
derived ther » derived rather (Expandir a Pesquisa), derived three (Expandir a Pesquisa), derived thin (Expandir a Pesquisa)
level rather » levels rather (Expandir a Pesquisa), level rate (Expandir a Pesquisa), level catheter (Expandir a Pesquisa)
laser other » laser ther (Expandir a Pesquisa), liver other (Expandir a Pesquisa), cancer other (Expandir a Pesquisa)
drug doses » drug dose (Expandir a Pesquisa), drug disease (Expandir a Pesquisa)
does laser » does liver (Expandir a Pesquisa), does lateral (Expandir a Pesquisa)
drug noise » drug naive (Expandir a Pesquisa), drug nurse (Expandir a Pesquisa), during noise (Expandir a Pesquisa)
drug does » drugs does (Expandir a Pesquisa), drug dose (Expandir a Pesquisa), drug de (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 doses derived ther ) or ((( drug does laser other ) or ( drug noise level rather ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug doses derived ther ) OR ((( drug does laser other ) OR ( drug noise level rather )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( drug doses derived ther ) or ((( drug does laser other ) or ( drug noise level rather ))))*.