Talvez deva tentar algumas variações de ortografia:
damage levels » damage level (Expandir a Pesquisa), damage models (Expandir a Pesquisa), srage levels (Expandir a Pesquisa)
dosages level » dosage level (Expandir a Pesquisa), dosage levels (Expandir a Pesquisa), dosages over (Expandir a Pesquisa)
boys develop » loss develop (Expandir a Pesquisa), locus develop (Expandir a Pesquisa), axons develop (Expandir a Pesquisa)
develop them » develop type (Expandir a Pesquisa), develop age (Expandir a Pesquisa)
drug dosages » drug dosage (Expandir a Pesquisa), drug doses (Expandir a Pesquisa), drug dose (Expandir a Pesquisa)
drug damage » drug damaged (Expandir a Pesquisa), drug dosage (Expandir a Pesquisa)
levels ther » levels other (Expandir a Pesquisa), levels rather (Expandir a Pesquisa), levels three (Expandir a Pesquisa)
level ther » level theory (Expandir a Pesquisa), level rather (Expandir a Pesquisa), levels other (Expandir a Pesquisa)
drug boys » drug book (Expandir a Pesquisa), drug bay (Expandir a Pesquisa), drug box (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 boys develop them ) or ((( drug dosages level ther ) or ( drug damage levels ther ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug boys develop them ) OR ((( drug dosages level ther ) OR ( drug damage levels ther ))))*.