Talvez deva tentar algumas variações de ortografia:
phrase structure » phase structure (Expandir a busca), frame structure (Expandir a busca), age structure (Expandir a busca)
decrease toc » decrease of (Expandir a busca), decrease the (Expandir a busca), decreased to (Expandir a busca)
decrease and » decreases and (Expandir a busca), decrease in (Expandir a busca), decrease of (Expandir a busca)
and decrease » and decreases (Expandir a busca), and decreased (Expandir a busca), and increase (Expandir a busca)
decrease may » decrease at (Expandir a busca), decrease by (Expandir a busca), decrease human (Expandir a busca)
may decrease » may increase (Expandir a busca), can decrease (Expandir a busca), to decrease (Expandir a busca)
toc phrase » the phrase (Expandir a busca), of phrase (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Caso esteja tentando utilizar os operadores booleanos, deve escrevê-los em Letras MAIÚSCULAS: (( decrease toc phrase structure learning ) OR ( decrease AND decrease may decrease ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( decrease toc phrase structure learning ) OR ( decrease and decrease may decrease ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( decrease toc phrase structure learning ) OR ( decrease and decrease may decrease ))*.