Talvez deva tentar algumas variações de ortografia:
decrease frequency » increased frequency (Expandir a busca), disease frequency (Expandir a busca), increasing frequency (Expandir a busca)
frequency program » fluency program (Expandir a busca), frequency diagram (Expandir a busca), reidency program (Expandir a busca)
decrease toc » decrease of (Expandir a busca), decrease the (Expandir a busca), decrease on (Expandir a busca)
toc decrease » to decrease (Expandir a busca), the decrease (Expandir a busca), not decrease (Expandir a busca)
python xcode » python code (Expandir a busca), python cuda (Expandir a busca)
xcode java » codes java (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease toc decrease frequency program ) OR ( python xcode java python programming ))~.