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 costs » decreasing costs (Expandir a busca), decreases post (Expandir a busca), disease costs (Expandir a busca)
costs phrase » costs case (Expandir a busca), costs pre (Expandir a busca), costs pha (Expandir a busca)
decrease not » decrease of (Expandir a busca), decrease akt (Expandir a busca), decrease at (Expandir a busca)
not decrease » to decrease (Expandir a busca), not increase (Expandir a busca), and decrease (Expandir a busca)
decrease on » decrease in (Expandir a busca), decrease of (Expandir a busca), decrease or (Expandir a busca)
on decrease » on decreased (Expandir a busca), of decrease (Expandir a busca), or decrease (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 costs phrase structure learning ) OR ( decrease on decrease NOT decrease ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( decrease costs phrase structure learning ) OR ( decrease on decrease not decrease ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( decrease costs phrase structure learning ) OR ( decrease on decrease not decrease ))*.